gimmick

noun

1. A trick or device used to attain some end.

   “The box had a gimmick to make the coin appear to vanish.”

   “Epperlein and Tucker focus on two featherweight hopefuls: Dustin Poirier, a formidable contender who’s looking to parlay a history of schoolyard violence and street-fighting into a potential career, and Albert Stainback, a more thoughtful yet more erratic and undisciplined fighter whose chief gimmick is entering the ring wearing a hat like the one Malcolm McDowell wore in A Clockwork Orange.”

2. A ploy or strategy used to attract attention or gain traction.

   “The contest was a gimmick to get people to sign up for their mailing list.”

3. A gimmick capacitor.
4. (Philippines)A night out with one's friends.

verb

1. (transitive)To rig or set up with a trick or device.

   “The magician's box was gimmicked with a wire that made it appear to open on its own.”