gimmick

Noun (3)

1. a drawback or difficulty that is not readily evident“it sounds good but what's the catch?”Synonyms: catch
2. something unspecified whose name is either forgotten or not known“she eased the ball-shaped doodad back into its socket”“there may be some great new gizmo around the corner that you will want to use”Synonyms: doodaddoohickeydoojiggergizmogismogubbinsthingamabobthingumabobthingmabobthingamajigthingumajigthingmajigthingummywhatchamacallitwhatchamacallumwhatsiswidget
3. any clever maneuver“he would stoop to any device to win a point”“it was a great sales gimmick”“a cheap promotions gimmick for greedy businessmen”Synonyms: devicetwist