411 REFERENCE · Wiktionary
Oes y Cerrig
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Welsh
cy:
Noun
Oes y Cerrig f
cy archaeology the Stone Age
Coordinate terms
cy Oes yr Efydd the Bronze Age
cy Oes yr Haearn the Iron Age
Mutation
References