aderyn y ddrycin

== Welsh == === Noun === aderyn y ddrycin m singulative of adar y ddrycin, an alternative form of adar drycin (“shearwaters, petrels”) === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “aderyn y ddrycin”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies