Welsh Place Name Elements
A list of words found in Welsh place-names with their English translations.
Many Welsh place names are made up of several elements.
Literally translated the name Rhosllannerchrugog comes from:
- rhos "moor"
 - llannerch "glade"
 - grugog "heathery"
 
hence Moor of the Heathery Glade. Unsurprisingly it is often known simply as Rhos!
| Index: | A B C Ch D E F Ff G H I L Ll M N O P R Rh S T Th U V W Y | 
A
| Abaty | an abbey | 
| Aber | mouth (coastal), or confluence (inland), of a river | 
| Adfa | border, recess, place to drive animals | 
| Adwy | a gap, pass | 
| Ael | brow of a hill | 
| Afon | a river | 
| Allt | a wooded hill or cliff | 
| Aran | a mountain ridge | 
| Arian | silver | 
| Aur | gold | 
| Awel | a breeze, wind | 
 
B
| Bach | small, little | 
| Bala | where a river flows from a lake | 
| Banc or Bonc | a bank, hillock | 
| Bedw | birch trees | 
| Beili | a yard, enclosure, bailey | 
| Berllan | an orchard | 
| Berth | a copse, hedge | 
| Berthi | hedges | 
| Betws | an oratory, prayer house, bede house | 
| Blaen | head of a valley, source of a river | 
| Blaenau | valley heads | 
| Bont | a bridge | 
 
C
| Cae | a field | 
| Capel | a chapel | 
| Carn | a heap of stones | 
| Carreg | a rock | 
| Cwrt | a court | 
 
D
| Dalen | a leaf | 
| Dan | under | 
| De | south | 
| Derwen | an oak tree | 
| Derw | oak trees | 
| Dinas | a fort | 
| Dol | a meadow, river meadow | 
| Domen | a mound | 
| Dre (mutation of 'tre') | a town, home | 
| Dryw | a wren | 
| Du | black | 
| Dŵr or Dŵfr | water | 
| Dyffryn | a valley | 
| Dyserth | a retreat | 
 
E
| Efail | a smithy | 
| Eglwys | a church | 
| Eithin | gorse | 
| Eos | a nightingale | 
| Erw | an acre | 
| Esgair | a mountain ridge | 
 
F
| Fach (mutation of 'bach') | little, small | 
| Fan (mutation of 'ban') | a peak | 
| Fechan (feminine mutation of 'bychan') | little, small | 
| Fedwen (mutation of 'bedwen') | a birch tree | 
| Fedw (mutation of 'bedw') | birch trees | 
| Felen (feminine mutation of 'melyn') | yellow | 
| Felin (mutation of 'melin') | a mill | 
| Foel (mutation of 'moel') | a bare topped hill | 
| Fron (mutation of 'bron') | a hillside | 
| Fychan (mutation of 'bychan') | little, small | 
 
Ff
| Ffin | a border, limit | 
| Ffordd | a road | 
| Ffyrdd | roads | 
| Ffos | a ditch, brook | 
| Ffridd | a sheepwalk, mountain pasture | 
| Ffrith | a sheepwalk | 
| Ffrwd | a stream | 
| Ffynnon | well | 
 
G
| Gaer (mutation of 'caer') | a fort, camp | 
| Gallt | a wooded hill or cliff | 
| Garn | a heap of stones | 
| Gelli | a grove, small wood | 
| Glan | a river bank | 
| Glyn | a glen | 
| Goch (mutation of 'coch') | red | 
| Godre | foot of a hill, edge, border | 
| Graig (mutation of 'craig') | a rock, crag | 
| Gwynt | wind | 
 
H
| Hafan | a haven | 
| Hafod | a summer dwelling and pasture | 
| Helyg | willow trees | 
| Hen | old, ancient | 
| Hendre | winter dwelling | 
| Heol | a road | 
| Hir | long | 
| Hwylfa | a pathway, entry | 
| Hydd | a stag | 
 
I
| Isel | low | 
| Is | lower | 
| Isaf | lowest | 
| Issa | lowest | 
 
L
| Lan (mutation of 'glan') | a bank, shore | 
| Las (mutation of 'glas') | blue, verdant, lush, green | 
 
Ll
| Llaith | wet | 
| Llan | an enclosure, church, church village | 
| Llawr | a valley floor | 
| Llech | a flagstone, flat stone, slate | 
| Llethyr | a slope | 
| Lloches | a shelter | 
| Lluest | a small hill farm, hut | 
| Llwyd | holy, sanctified, grey | 
| Llwyn | a bush, grove | 
| Llyn | a lake | 
| Llys | a palace, court, enclosure | 
 
M
| Maen | a cut stone, rock | 
| Maes | a field | 
| Mawn | peat | 
| Mawr | big, large, great | 
| Meifod | a halfway house | 
| Meity | a halfway house | 
| Melin | a mill | 
| Melyn | yellow | 
| Merthyr | a martyr | 
| Moel | a bare topped hill | 
| Môr | sea | 
| Morfa | sea marsh | 
| Mur | a wall | 
| Murddyn | a ruin | 
| Mwnt | a mound, hill | 
| Mynach | a monk | 
| Mynydd | a mountain | 
 
N
| Nant | a stream, brook | 
| Neuadd | a hall, mansion | 
| Newydd | new | 
 
O
| Ochr | side, edge | 
| Oer | cold | 
| Ogof | a cave | 
| Onnen | an ash tree | 
 
P
| Pandy | a fulling mill | 
| Pant | a hollow | 
| Parc | a park | 
| Pen | head, end, top | 
| Pentref or Pentre | a village, hamlet | 
| Perth | a copse, hedge | 
| Pistyll | a spring, well | 
| Plas | a hall, place, mansion | 
| Pont | a bridge | 
| Porth | a landing place, gateway | 
 
Rh
| Rhaeadr | a waterfall | 
| Rhiw | a hillside | 
| Rhodwydd | an embankment, earthwork | 
| Rhos | a moorland | 
| Rhyd | a ford | 
| Rhyn | a headland | 
 
S
| Sant | a saint | 
| Sarn | a causeway, paved road | 
| Sarnau | causeways | 
| Swydd | a district | 
| Sych | dry | 
 
T
| Tafarn | an inn | 
| Tai | houses | 
| Tal | end, front | 
| Tarren | a rocky hillside, cliff | 
| Teg | fair | 
| Tir | land | 
| Tomen | a mound, heap | 
| Ton | lay land | 
| Traeth | beach, shore | 
| Tref or Tre | a town, habitation | 
| Tro | a turn, bend | 
| Troed | foot, base | 
| Tros | over | 
| Trwyn | a promontory | 
| Twll | a hollow | 
| Tŷ | a house | 
| Tyddyn | a farmstead | 
| Ty'n | a farmstead | 
 
U
| Uch | higher | 
| Uchaf | highest | 
| Uchel | high | 
| Uwch | above | 
 
W
| Waun | a moorland field | 
| Waen | a moorland field | 
| Wen (feminine mutation of 'gwyn') | white, fair, blessed | 
| Werdd (feminine mutation of 'gwyrdd') | green | 
| Wern (mutation of 'gwern') | a marsh, alder trees | 
| Wig (mutation of 'gwig') | a haven, wooded land | 
| Wrth | near to, by | 
 
Y
| Y | the | 
| Yr (before vowels) | the | 
| Yn | in | 
| Ynys | an island | 
| Ysbyty | a hospital, hostel | 
| Ysgol | a school | 
| Ysgubor | a barn | 
| Ystrad | a vale, wide valley | 
| Ystryd | a street | 
| Ystum | a bend, curve | 
| Ystwyth | pliable, agile |