cyfyngfor

== Welsh == === Etymology === cyfyng (“narrow”) +‎ môr (“sea”) === Noun === cyfyngfor m (plural cyfyngforoedd) straits, channel, firth, narrow sea Synonyms: culfor, sianel === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “cyfyngfor”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies