Fiddle  —n. 1 colloq. Or derog. Stringed instrument played with a bow, esp. A violin. 2 colloq. Cheat or fraud. 3 fiddly task. —v. (-ling) 1 a (often foll. By with, at) play restlessly. B (often foll. By about) move aimlessly; waste time. C (usu. Foll. By with) adjust, tinker; tamper. 2 slang a cheat, swindle. B falsify. C get by cheating. 3 play (a tune) on the fiddle.  as fit as a fiddle in very good health. Play second (or first) fiddle take a subordinate (or leading) role. [old english]