trewyn ymlusgaidd

== Welsh == === Etymology === Literally, “creeping loosestrife”. === Noun === trewyn ymlusgaidd (plural, singular trewynyn ymlusgaidd m) creeping loosestrife, creeping jenny, herb twopence (Lysimachia nummularia) ==== Synonyms ==== siani lusg === Mutation === === Further reading === Cymdeithas Edward Llwyd (2016), “Y Bywiadur”, in Llên natur‎[1], retrieved 25 May 2025