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Ordnance Survey – Great Britain's national mapping agency
Place names are made up of components which are referred to as elements. These elements are simply the words people used to describe a place or their response to their environment. This is a glossary of the elements, generic and qualifying, most frequently found in the place names of Wales. A more complete background to Welsh in place names, pronunciation and spelling can be found accompanying Introduction to Welsh origins of place names in Britain .
Each element is cited in its radical form, any common dialectal variant, its feminine form (in the case of an adjective), its plural (if found in place-names) and its gender.
The meaning given is that which occurs in place names. Some elements occur only in place names and others are prefixes, suffixes or particles that modify or qualify place names.
Two place names (with grid references) are cited as examples for each element.
Abbreviations
| adj | = | adjective | nf | = | noun feminine | |
| adv | = | adverb | nm | = | noun masculine | |
| f | = | feminine | np | = | noun plural | |
| m | = | masculine | pr | = | preposition | |
| pl | = | plural | num | = | number |
A to B | C | D to F | G to I | L to O | P to S | T to Y
| Element | Meaning | Examples |
| caban nm | cottage , cabin | Caban-coch SN9163 Caban SH3938 |
| cadair nf | seat, stronghold | Cadair SJ0060 Penacader SN4436 |
| cadarn adj | strong , powerful | Crucadarn SO0942 Twyn Cerrig-cadarn SN9438 |
| cadno nm | fox | Carreg Cadno SN8715 Clo Cadno SO1116 |
| cadw nm | preserve , spinney | Maes-cadw SJ0147 Coed Cadw SH5978 |
| cae nm caeau pl | field , enclosure | Pen-y-cae SJ2845 Rhes-y-cae SJ1870 |
| caer nf caerau pl | stronghold , fort | Caernarfon SH4862 Caerdydd ST1876 |
| caeth adj & nm/f caith pl | captive | Cricieth SH5038 Caethle SN6099 |
| cafn nm | ferry-boat | Tal-y-cafn SH7871 Nant-y-cafn SN8107 |
| cain adj | fine , fair , beautiful; ridge | Cilcain SJ1765 Pistyll Cain SH7327 |
| calch nm | lime , chalk | Pen Cerrig-calch SO2122 Twyn Calch ST2699 |
| caled adj & nm | hard | Sarn-y-bryn-caled SJ2105 Cae Caled SH4069 |
| cam adj | crooked , bent | Pengam ST1597 Camros SM9220 |
| camfa nf | stile | Nant Maes y gamfa SH8112 Camfa Derw SH6744 |
| canol nm | middle | Y Felin Ganol SM8025 Tircanol SS6798 |
| cantref nm | hundred (territorial division) | Cantref SO0525 Cantref ST2815 |
| capel nm | chapel | Capel Curig SH7258 Capel Bangor SN6580 |
| carn nf carnau pl | heap of stones , tumulus | Pen-y-garn SN5731 Aber-carn SN5731 |
| carnedd nf/m carneddau , carneddi pl | heap of stones , tumulus | Penygarnedd SJ1023 Bryncarnedd SN6082 |
| carreg nf cerrig pl | stone , rock | Llanbadarn y Garreg SO1148 Cerrigceinwen SH4273 |
| carrog nf | torrent , fast-flowing stream | Carrog SH7647 Dolgarrog SH7767 |
| carrog nf | brook | Carrog SJ1143 Carrog SH7647 |
| carw nm | stag | Gallt-y-carw SH7521 Cilcarw SN4912 |
| cas nm | castle | Cas-bach ST2583 Croes Cas-lai SM9125 |
| caseg nf cesig pl | mare | Afon Caseg SH6566 Llyn Caseg-fraith SH6758 |
| castell nm cestyll pl | castle; small stronghold; fortified residence | Castell Nedd SS7597 Castell-Paen SO1646 |
| cath nf | cat | Carreg-y-gath SH5765 Rhyd-y-gath SN2131 |
| cau adj | hollow; enclosed | Caubwll SJ0171 Cwm Cou SN6264 |
| cawl nm | sea-kale (soup) | Porthcawl SS8277 Heol-y-cawl ST0887 |
| cawr nm -es f ceiri , cewri pl | giant | Castell Cawr SH9376 Barclodiad y Gawres SH3270 |
| caws nm | cheese | Nant-y-caws SN4518 Cerrig Caws SH9556 |
| ceffyl nm ceffylau pI | horse | Bryn Ceffyl SH7837 Allt y Ceffylau SH6747 |
| cefn nm cefnydd pI | r idge | Cefn-brith SH9350 Cefn-coch SJ1351 |
| cefnen nf | ridge | Cefnen SH8776 Cefnen Wen SH8854 |
| cegid np | hemlock | Cegidfa SJ2211 Bryniau Ystumcegid SH5041 |
| cegin nf | kitchen | Abercegin SH5972 Gegin SJ2752 |
| cegyr np | hemlock | Cwm-cegyr SO2517 Dolycegyr SN9054 |
| cei nm | quay | Ceinewydd SN3859 Cei Ystagbwll SR9995 |
| ceiliog nm | cock | Caergeiliog SH3078 Croesyceiliog SN4016 |
| ceirch , cyrch nm | oats | Bryn-ceirch SN4739 Cae-ceirch SH7719 |
| ceisiad nm ceisiaid pl | bailiff | Nant-y-ceisiad ST2089 Llain Ceisiad SN1728 |
| cell nf celloedd , cellau pl | cell | Gell-fain SN8432 Dolgellau SH7217 |
| celli nf | grove | Y Gelli Gandryll SO2242 Pencelli SO0925 |
| celynnen nf celyn pl | holly tree | Llwyncelyn SN4459 Trecelyn ST2197 |
| celynnog , clynnog nf | holly grove | Clynnog SH4149 Ffridd Celynnog SH8019 |
| cemais , (cemaes) nm (from np) | bend in river or coastline | Cemaes SH3693 Cemais Comawndwr SO3404 |
| cennin np | leeks | Llanbedrycennin SH7569 Cilcennin SN5260 |
| cerddinen , cerdinen nf cerddin , cerdin pl | mountain-ash | Blaencerdinfach SN3748 Bryn-Cerdin SN3848 |
| cerwyn nf | vat , pot-hole | Foel Cwmcerwyn SN0931 Cwmcerwyn SS8390 |
| cesail nf | hollow | Cesailgwm SH6921 Coed y Gesail SH8210 |
| cest nf | belly , swelling | Porth-y-gest SH5637 Brongest SN3245 |
| ceulan nf | river bank | Cwm Ceulan SN7090 Fforch Ceulan SN7520 |
| ceunant nm | ravine , gorge | Pen-y-ceunant SJ0823 Mynydd Ty'n-y-ceunant SH7308 |
| ch- | A word starting ch may be a mutated form of a word starting c | |
| chwaen nf | piece of land , breezy , windy place | Chwaen Bach SH3983 Chwaen-wen SH3682 |
| chwilog nf | land infested with beetles | Chwilog SH4338 Chwilog Fawr SH4438 |
| ci nm cŵn pI | dog | Tre-cŵn SM9632 Carnedd y Ci SJ0534 |
| cigfran nf cigfrain pl | raven | Craig Nyth-y-gigfran SH6845 Cwmgigfran SN4519 |
| cil nm ciliau pl | retreat , recess , corner | Llanycil SH9134 Ciliau Aeron SN5058 |
| cilfach nf | nook | Gilfachreda SN4058 Y Gilfach-goch SS9889 |
| cist nf | chest | Cist Cerrig SH5438 Gist Wen SO0621 |
| cistfaen nm | stone-chest | Cistfaen SN8677 Cistfaen SH9938 |
| clafdy nm | hospital | Clafdy SH3569 Rhyd-y-clafdy SH3234 |
| clawdd nm cloddiau pl | ditch , hedge | Penclawdd SS5495 Clawddnewydd SJ0852 |
| clegyr nm | rock , cliff | Clegyr-mawr SJ0549 Penclegyr SM7629 |
| clip nm -iau pl | precipice , crag , steep slope | Clip SH6532 Clipiau SH4146 |
| cloch nf | bell | Maenclochog SN0827 Clochfaen SN9078 |
| clochydd nm | sexton , parish clerk | Dôl-y-clochydd SH7321 Bryn-y-clochydd SH8760 |
| clog nf clogau pl | crag , precipice | Clogfryn SN4462 Carn Pen-y-clogau SN7118 |
| clogwyn nm | precipice , steep rock hanging on one side | Clogwyn SH7217 Clogwynygarreg SH5553 |
| clos nm | yard before a house | Clos SN1840 Closglas SN6424 |
| clun nm | meadow , moor | Clunderwen SN1219 Cluncoch SN3732 |
| clwt , clwtyn nm clytiau pl | patch | Clwt-y-bont SH5762 Clwt SJ3245 |
| clwyd nf clwydydd pl | hurdle , gate | Clwydygraig SO1624 Pentreclwydau SN8405 |
| clyd adj | sheltered | Cwm-clyd SN6273 Lletty-clyd SN2737 |
| cnap , cnepyn nm | top , summit of hill , short sharp ascent | Pen-y-cnap SN5121 Bryn-cnap SH9465 |
| cnol nf | hillock , knoll | Twyn-y-gnol ST2296 Cnol Wen SN8260 |
| cnwc nm | hillock | Cefn Cnwc SN7759 Pencnwc SN2222 |
| cnwch nm | hillock | Cnwch-coch SN6775 Cefn Cnwcheithinog SN7549 |
| coc , cocyn nm cociau pl | tump , hillock | Bryn-cocyn SH9968 Ffridd Cocyn SH6204 |
| coch adj cochion pl | red | Penrhyn-coch SN6484 Bryn-coch SS7499 |
| coeden nf coed pl | tree | Coed-elái ST0185 Coed-duon ST1797 |
| coedlan nf | copse , coppice , woodland glade , grove | Coedlannau SN4648 Llannerch Coedlan SO0940 |
| coetan nf | quoit | Carreg Coetan SN0639 Coetan Arthur SH3981 |
| coetgae nm | woodfield , field recovered from forest; palisaded enclosure | Coetgae Du SO0316 Panwaun Pen-y-coetgae SN9000 |
| collen nf cyll , coll pl | hazel | Cwrt y Gollen SO2317 Cyll SN9788 |
| colomen nf colomennod pl | dove | Colomendy SJ3045 Moel Golomen SN7087 |
| colwyn nm | whelp | Bae Colwyn SH8678 Tregolwyn SS9475 |
| comin nm comins pl | common | Comins-coch SN6182 Comin-y-garth SN9854 |
| congl nf | corner | Congl-y-cae SH2133 Gongl-gam SH3471 |
| copa nf | crest , summit | Copa Ceiliog SH8748 Copa Shôn SN7899 |
| cored nf | weir | Pant-y-cored SO0432 Gored Goch SH5471 |
| corlan nf | sheep-fold | Corlan Fraith SH6300 Corlannau SS7690 |
| corn nf | stall , crib | Llanfihangel Rhos-y-corn SN5534 Corn y Fan SN9835 |
| cornant nf | brook | Pantycornant SS9688 Cornant SN4952 |
| cornel nf | corner | Plas-yn-cornel SH9366 Pwllcornel SN3742 |
| coron nf | crown | Goron SO1094 Goron-ddu SO1896 |
| cors nf corsydd pl | bog | Llan-gors SO1327 Y Gors-las SN5713 |
| craf nm | garlic | Aber-craf SN8112 Crafnant SH6129 |
| craig nf creigiau pl | rock | Craig-y-nos SN8415 Graig SH8074 |
| crau nm | piggery , sty; stronghold | Llanfihangel-y-creuddyn SN6676 Pont Creuddyn SN5552 |
| criafolen nf criafol pl | mountain-ash | Waun y Griafolen SH8129 Pant-y-griafolen SH9149 |
| crib nf cribau pl | crest , summit | Cribyn SN5251 Cefn Crib SO2300 |
| crin adj | withered | Cefn-crin SO0272 Cringoed SH8801 |
| crochan nm | cauldron | Foel Crochan SH7610 Maes-y-crochan ST2383 |
| croes nf | cross | Pen-y-groes SN5813 Tŷ-croes SH3472 |
| croesffordd , croesheol , croeslon nf | cross-roads | Groesffordd SO0728 Ty'n-y-groesffordd SJ1359 |
| crofft nf crofftau pl | croft | Grofft SH8104 Bryn-y-crofftau SN7463 |
| crug nm crugiau pl | heap , tump | Crug-y-bar SN6537 Yr Wyddgrug SJ2363 |
| crwm adj | crooked , bent | Crymlyn ST2198 Crymych SN1833 |
| crwth nm | tump , hillock | Cwmcrwth SN5724 Llwyn y Crwth SJ2000 |
| cul adj | narrow | Cefn Cul SN8618 Esgair Gul SN8856 |
| cut nm cutiau pl | shed , sty | Cutiau SH6317 Ffynnon Cut-y-geifr SH9833 |
| cwar nm cwarrau pI | quarry | Pen y Cwar SN6308 Cwarrau-mawr ST1489 |
| cwm nm cymau , cymoedd pl | valley , dale | Cwmcewydd SH8713 Cwmaman ST0099 |
| cwmwd nm | commote (territorial division) | Mynydd Tir-y-cwmwd SH3230 Cefn Cwmwd SH4374 |
| cŵn (see ci) | ||
| cwrn nm cyrn , cyrnau pI | stack , peak , point | Pencyrn ST0077 Trecyrn SN2426 |
| cwrt nm | court , yard | Cwrtnewydd SN4847 Cwrt Henry SN5522 |
| cwrw nm | ale | Pwll-y-cwrw SO0935 Bryn Cwrw SN0007 |
| cyff , cyffyll nm | stock , stump | Y Gyffylliog SJ0557 Pont Rhyd-y-cyff SS8789 |
| cyffin nm | boundary , frontier | Gyffin SH7776 Penisacyffin SJ0513 |
| cyfrwy nm | ridge between two summits (saddle) | Pen y Cyfrwy SM7524 Carn Gyfrwy SN1432 |
| cyfylchi nf | circular fortress | Gyfylchi SS8195 Dwygyfylchi SH7377 |
| cyfyng adj | narrow strait | Cyfyng SH7753 Pont Gyfyng SH5245 |
| cyll (see collen) | ||
| cymer nm cymerau pl | confluence | Rhydcymerau SN5738 Pentrellyncymer SH9752 |
| cythraul nm | devil | Craig y Cythraul SJ2347 Cadair y Cythraul SH3964 |
| cytir nm | common | Cytir SH8715 Cytir-bach SN2449 |