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...这只不过是一种公关伎俩。The exhibition is informative, up to date, and mercifully free of gimmicks.这个展览既能让人增长见识，又紧跟时代前沿，而且幸运的是没有华而不实的东西。
英汉词典释义
n.
花招,诡计,骗人的玩意儿
a new gimmick to encourage people to go to the cinema鼓动大众去看电影的新噱头a publicity gimmick宣传的噱头He dismissed the event as just a publicity gimmick.他不理会这件事，只当它是一种宣传手法。
英英词典释义
Noun
1. something whose name is either forgotten or not known