N-COUNT
（引人注意或關注的）噱頭，花招
A gimmick is an unusual and unnecessary feature or action whose purpose is to attract attention or publicity.
例句
It is just a public relations gimmick...
這只不過是一種公關伎倆。
The exhibition is informative, up to date, and mercifully free of gimmicks.
這個展覽既能讓人增長見識，又緊跟時代前沿，而且幸運的是沒有華而不實的東西。