Definition of gimmick noun from the Oxford Advanced Learner's Dictionary

 

gimmick

 noun
noun
BrE BrE//ˈɡɪmɪk//
 
; NAmE NAmE//ˈɡɪmɪk//
 
(often disapproving) Marketing
 
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an unusual trick or unnecessary device that is intended to attract attention or to persuade people to buy something a promotional/publicity/sales gimmick We don’t use gimmicks to sell our products. The promise of lower taxation may have been just an election gimmick to gain votes. a new gimmick to encourage people to go to the cinema See related entries: Marketing Word Origin 1920s (originally US): of unknown origin but possibly an approximate anagram of magic, the original sense being ‘a piece of magicians' apparatus’.
See the Oxford Advanced American Dictionary entry: gimmick