thatch

Etymology

A variant of thack, from Middle English thache, thach, from Old English þæc (“roof-covering”), from Proto-West Germanic *þak, from Proto-Germanic *þaką (“covering”), from the o-grade of Proto-Indo-European *(s)teg- (“cover”). It is cognate with Icelandic þak, Dutch dak, German Dach, Norwegian tak, Swedish tak and Danish tag, and also with Latin toga, Albanian thak (“awn, beard, pin, peg, tassel, fringe”), Lithuanian stogas (“roof”) and Welsh to (“roof”). It is related to Ancient Greek τέγος (tégos, “roof”) and στέγη (stégē, “roof”). See also English deech and deck.