Main entry: appliance, widget, gismo, gizmo, contraption, contrivance, convenience, gadget
Definition: a device or control that is very useful for a particular job
Main entry: doodad, doohickey, doojigger, gubbins, gimmick, gismo, gizmo, thingamabob, thingamajig, thingmabob, thingmajig, thingumabob, thingumajig, thingummy, whatchamacallit, whatchamacallum, whatsis, widget
Definition: something unspecified whose name is either forgotten or not known
Usage: 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