Old English acwencan "to quench" (of fire, light), from Proto-Germanic *kwenkjanan, probably a causative form from the source of Old English cwincan "to go out, be extinguished," Old Frisian kwinka. No certain cognates outside Germanic; perhaps a substratum word. Related: Quenched; quenching.

Old English cweorn "hand-mill, mill," from PIE *gwere-na- "millstone" (source also of Old Norse kvern, Old Frisian quern, Old High German quirn, Gothic quirnus; Sanskrit grava "crushing stone;" Lithuanian girna "millstone," girnos "hand mills;" Old Church Slavonic zrunuvi "mills;" Welsh brevan "hand mill"), suffixed form of root *gwere- (1) "heavy."