llosgfaen

== Welsh == === Etymology === From llosg (“burn, burnt, incendiary”) +‎ maen (“stone”). === Pronunciation === (North Wales) IPA(key): /ˈɬɔsɡvaɨ̯n/ (South Wales) IPA(key): /ˈɬɔsɡvai̯n/ === Noun === llosgfaen m (plural llosgfeini) brimstone Synonym: brwmstan (obsolete) sulfur Synonym: sylffwr === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “llosgfaen”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies