Synonyms for Gimmick (same or very similar meaning)
WordNet sense 1 (a drawback or difficulty that is not readily evident):
catch
WordNet sense 2 (something unspecified whose name is either forgotten or not known):
doodad, doohickey, gismo, gizmo, thingamabob, thingamajig, whatchamacallit, widget, gubbins, thingmabob, thingmajig, thingumabob, thingumajig, thingummy, whatsis, doojigger, whatchamacallum
WordNet sense 3 (any clever maneuver):
device, twist
From the ODE community, based on WordNet
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