#1 gizmo n. [doodad, doohickey, doojigger, gimmick, gismo, gubbins, thingamabob, thingumabob, thingmabob, thingamajig, thingumajig, thingmajig, thingummy, whatchamacallit, whatchamacallum, whatsis, widget] 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". wn
#2 gizmo n. [appliance, contraption, contrivance, convenience, gadget, gismo, widget] a device or control that is very useful for a particular job. wn
vizzz