cilbren

== Welsh == === Etymology === From cil (“keel”) +‎ pren (“timber”). === Pronunciation === IPA(key): /ˈkɪlbrɛn/ Rhymes: -ɪlbrɛn === Noun === cilbren m (plural cilbrennau) (nautical) keel Synonyms: cil, cêl, celbren === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “cilbren”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies