A name for a gadget or thing whose actual name is unknown or has been forgotten. Where's that doojigger? I need it to finish this repair.Hand me that doojigger or whatever it's called, will you?
doojigger
and doohickey and doohickie (ˈdudʒɪgɚ and ˈduhɪki)
n. a name for a gadget. Toss me that little red doohickey, will you?