gizmo Meaning, Definition & Usage

1. noun something unspecified whose name is either forgotten or not known
   gubbins; gismo; thingumabob; whatchamacallit; doohickey; doodad; thingumajig; widget; whatsis; thingamabob; thingummy; thingmabob; whatchamacallum; doojigger; thingamajig; gimmick; thingmajig.
   
   • 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
2. noun a device or control that is very useful for a particular job
   contraption; gismo; gadget; appliance; widget; convenience; contrivance.
   

WordNet