gimmick
名词 gimmick:
a drawback or difficulty that is not readily evident
同义词:catch
something unspecified whose name is either forgotten or not known
同义词:doodad, doohickey, doojigger, gizmo, gismo, gubbins, thingamabob, thingumabob, thingmabob, thingamajig, thingumajig, thingmajig, thingummy, whatchamacallit, whatchamacallum, whatsis, widget
any clever maneuver