TIDDLER Meaning of TIDDLER in English n. Brit. colloq. 1 a small fish, esp. a stickleback or minnow. 2 an unusually small thing or person. [ perh. rel. to TIDDLY(2) and tittlebat, a childish form of stickleback ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012