WordWeb Online

1. Something unspecified whose name is either forgotten or not known
   "she eased the ball-shaped gismo back into its socket"
   - doodad [N. Amer], doohickey [N. Amer], dojigger [N. Amer], gimmick, gizmo, gubbins [Brit], thingamabob, thingumabob, thingmabob, thingamajig, thingumajig, thingmajig, thingummy, whatchamacallit, whatchamacallum, whatsis, widget, doodah [Brit], doobry [Brit], doobrie [Brit], thingy, thingo [Austral], dingus [N. Amer], doover [Austral], doofer [Brit], whatsit
    
2. A device or control that is very useful for a particular job
   - appliance, contraption, contrivance, convenience, gadget, gizmo, widget

Derived forms: gismos

Type of: device, stuff

Encyclopedia: Gismo