pivot (n.)youdaoicibaDictYouDict[pivot 词源字典]
1610s, from French pivot, from Old French pivot "hinge pin, pivot" (12c.), also "penis," of uncertain origin. Figurative sense of "central point" is recorded from 1813.[pivot etymology, pivot origin, 英语词源]
pivot (v.)youdaoicibaDictYouDict
by 1841, from French pivoter and from pivot (n). Related: Pivoted; pivoting.