Definition of "gimmick"

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.

April 19 2012, Scott Tobias, “Fightville”, in AV Club‎

Rear Admiral Mikhailovich: I don't begrudge the politicians' decision to throw you to the Council. It's an... opportunity. I do begrudge this overdesigned piece of tin, though.Shepard: The Normandy is a fine ship, sir. She's served us well so far.Rear Admiral Mikhailovich: It's a gimmick, Commander. Useless in a stand-up fight.Rear Admiral Mikhailovich: This experiment diverted billions from our apportions bills. For the same price, we could've had a heavy cruiser.Rear Admiral Mikhailovich: But no, we had to make nice to the turians. Throw money at a co-developed boondoggle.

2008, BioWare, Mass Effect (Science Fiction), Redwood City: Electronic Arts, PC, scene: Citadel