jab (v.)youdaoicibaDictYouDict[jab 词源字典]
1825, "to thrust with a point," Scottish variant of job "to strike, pierce, thrust," from Middle English jobben "to jab, thrust, peck" (late 15c.), of unknown origin, perhaps echoic. Related: Jabbed; jabbing.[jab etymology, jab origin, 英语词源]