小發明
gizmo n 1: something whose name is either forgotten or not known [syn: {dohickey}, {dojigger}, {doodad}, {doohickey}, {gimmick}, {hickey}, {gismo}, {gubbins}, {thingamabob}, {thingumabob}, {thingmabob}, {thingamajig}, {thingumajig}, {thingmajig}, {thingummy}] 2: a device that is very useful for a particular job [syn: {appliance}, {contraption}, {contrivance}, {convenience}, {gadget}, {gismo}, {widget}]