ystum

== Old English == === Noun === ȳstum dative plural of ȳst == Welsh == === Etymology === From Middle Welsh ystum, from Proto-Celtic *tou(x)sman (“bend, arch, curve”). Cognate with Irish tuaim (“tumulus”). === Pronunciation === (North Wales, standard) IPA(key): /ˈəstɨm/ (South Wales, standard) IPA(key): /ˈəstɪm/ === Noun === ystum m or f (plural ystumiau) gesture, posture, pose Synonyms: amnaid, arwydd, osgo form, shape Synonyms: llun, siâp turning, curve, meander Synonyms: osgo, tro (in the plural) grimace ==== Derived terms ==== ==== Related terms ==== Oystermouth === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “ystum”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies