gimmick (
http://definr.com/gimmick)
n 1: something whose name is either forgotten or not known [syn:
dohickey,
dojigger,
doodad,
doohickey,
hickey,
gizmo,
gismo,
gubbins,
thingamabob,
thingumabob,
thingmabob,
thingamajig,
thingumajig,
thingmajig,
thingummy]
2: any clever (deceptive) maneuver; "he would stoop to any
device to win a point" [syn:
device,
twist]