gwregys nofio

== Welsh == === Etymology === Literally, “swimming belt”. === Proper noun === gwregys nofio m (plural gwregysau nofio) life belt Synonyms: gwregys achub, achubydd === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “gwregys nofio”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies