doohickey

n : something whose name is either forgotten or not known [syn:

{dohickey}, {dojigger}, {doodad}, {gimmick}, {gizmo}, {gubbins},

{thingamabob}, {thingumabob}, {thingmabob}, {thingamajig},

{thingumajig}, {thingmajig}, {thingummy}]