twm penddu

== Welsh == === Etymology === Literally, “black-headed tom”. === Noun === twm penddu m (plural tymiau penddu) Eurasian blackcap (Sylvia atricapilla) ==== Synonyms ==== telor penddu === Mutation === === Further reading === Cymdeithas Edward Llwyd (2018), “Y Bywiadur”, in Llên natur‎[1], retrieved 6 September 2025. R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “twm penddu”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies