celsan

== Welsh == === Etymology === From English keelson or kelson. === Pronunciation === IPA(key): /ˈkɛlsan/ Rhymes: -ɛlsan === Noun === celsan m (nautical) keelson (nautical) keel === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “celsan”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies