gaff (n.1)youdaoicibaDictYouDict[gaff 词源字典]
"iron hook," c. 1300, gaffe, from Old French gaffe "boat hook" (see gaffe). Specifically of the hook on a fishing spear from 1650s. As a type of spar from 1769. Related: gaff-hook.[gaff etymology, gaff origin, 英语词源]