thingumabob

thingumabob
    n 1: 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" [syn: {doodad},
         {doohickey}, {doojigger}, {gimmick}, {gizmo}, {gismo},
         {gubbins}, {thingamabob}, {thingumabob}, {thingmabob},
         {thingamajig}, {thingumajig}, {thingmajig}, {thingummy},
         {whatchamacallit}, {whatchamacallum}, {whatsis}, {widget}]
    

37 Moby Thesaurus words for "thingumabob":
      affair, article, artifact, dingus, dofunny, dohickey, dojigger,
      dojiggy, domajig, domajigger, doodad, dowhacky, eppes, etwas,
      flumadiddle, gadget, gigamaree, gimmick, gizmo, hickey, hootenanny,
      hootmalalie, jigger, material thing, object, quelque chose,
      something, thing, thingum, thingumadad, thingumadoodle,
      thingumajig, thingumajigger, thingumaree, thingummy, whatchy,
      widget