gimmick: [20] Gimmick originally meant ‘dishonest contrivance’ – indeed, in the first known printed reference to it, in George Maine’s and Bruce Grant’s Wise-crack dictionary 1926 (an American publication), it is defined specifically as a ‘device for making a fair game crooked’. The modern sense ‘stratagem for gaining attention’ seems to have come to the fore in the 1940s. The origins of the word are a mystery, although it has been suggested that it began as gimac, an anagram of magic used by conjurers. [gimmick etymology, gimmick origin, 英语词源]