flint

From Middle English flynt, flint, from Old English flint, from Proto-West Germanic *flint, from Proto-Germanic *flintaz (compare Dutch vlint, flint (“flint, cobblestone”), German Flins, Flint (“flint, pebble”), Danish flint (“flint”)), from Proto-Indo-European *(s)plind- (“to split, cleave”) (compare Irish slinn (“slate, shingle”), Ancient Greek πλίνθος (plínthos)), from *(s)pley- (“to split”). More at split.

出典: Wiktionary「flint」（CC BY-SA 4.0）