'gizmo' definitions:

Definition of 'gizmo'

From: WordNet
noun
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" [syn: doodad, doohickey, doojigger, gimmick, gizmo, gismo, gubbins, thingamabob, thingumabob, thingmabob, thingamajig, thingumajig, thingmajig, thingummy, whatchamacallit, whatchamacallum, whatsis, widget]
noun
A device or control that is very useful for a particular job [syn: appliance, contraption, contrivance, convenience, gadget, gizmo, gismo, widget]

Synonyms of 'gizmo'

From: Moby Thesaurus