sawdl y fuwch m or f (plural sodlau'r fuwch, not mutable)
- cowslip (Primula veris)[1]
- ^ R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “sawdl”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies