gismo

Noun gismo has 2 senses

• gismo(n = noun.artifact) doodad, doohickey, doojigger, gimmick, gizmo, gubbins, thingamabob, thingamajig, thingmabob, thingmajig, thingumabob, thingumajig, 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"
is a kind of stuff

• gismo(n = noun.artifact) appliance, contraption, contrivance, convenience, gadget, gizmo, widget - a device or control that is very useful for a particular job;
is a kind of device
has particulars: gadgetry, gimbal, injector, mod con