chwys Mair

== Welsh == === Etymology === Literally, “Mary's sweat”. === Noun === chwys Mair m (not mutable) buttercups (Ranunculus), especially bulbous buttercups (Ranunculus bulbosus) ==== Synonyms ==== blodyn ymenyn === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “chwys Mair”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies