DICT.TW Dictionary Taiwan

 thing·am·a·jig /ˈθɪŋəməˌʤɪg/

 thingamajig
      n : something whose name is either forgotten or not known [syn:
          dohickey, dojigger, doodad, doohickey, gimmick,
           hickey, gizmo, gismo, gubbins, thingamabob, thingumabob,
           thingmabob, thingumajig, thingmajig, thingummy]