fiddle (v.)youdaoicibaDictYouDict[fiddle 词源字典]
late 14c., "play upon a fiddle," from fiddle (n.); the figurative sense of "to act nervously, make idle movements, move the hands or something held in them in an idle, ineffective way" is from 1520s. Related: Fiddled; fiddling.[fiddle etymology, fiddle origin, 英语词源]