callestr

== Welsh == === Etymology === (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.). Cognate with Cornish kelester and Breton kailhastr. === Pronunciation === (North Wales, standard) IPA(key): /ˈkaɬɛsdr/, [ˈkaɬɛstr] (North Wales, colloquial) IPA(key): /ˈkaɬɛsd/, [ˈkaɬɛst]; /ˈkaɬasd/, [ˈkaɬast] (South Wales, standard) IPA(key): /ˈkaɬɛsdr/, [ˈkaɬɛstr] (South Wales, colloquial) IPA(key): /ˈkaɬɛsd/, [ˈkaɬɛst] === Noun === callestr m or f (plural cellystr or callestri) (literary, uncountable, countable) flint, a piece of flint Synonym: fflint (uncountable) pyrites Synonym: pyrit (countable) any hard thing ==== Derived terms ==== (obsolete) callestrai (“silicon”) === Mutation === === Further reading === Griffiths, Bruce; Glyn Jones, Dafydd (1995), “flint”, in Geiriadur yr Academi: The Welsh Academy English–Welsh Dictionary‎[1], Cardiff: University of Wales Press, →ISBN D. G. Lewis, N. Lewis, editors (2005–present), “callestr”, in Gweiadur: the Welsh–English Dictionary, Gwerin R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “callestr”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies