From Latin 'tornare' (to shape on a lathe), from Greek 'tornos' — a craftsman's term that became universal.
To move or cause to move around an axis or center; to change direction, position, or course.
From Old English 'turnian' and Old French 'torner,' both from Latin 'tornāre' meaning 'to turn on a lathe, to round off,' from 'tornus' (lathe), itself borrowed from Greek 'tórnos' (lathe, compass), from PIE root *terh₂- (to rub, turn, bore). The word entered English through a double channel — partly from Latin via French during the Norman period, partly from earlier Latin influence on Old English. Its original meaning was the specific mechanical action of shaping on a lathe, which broadened into the most general word for rotational and directional