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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?
doojiggerand doohickey and doohickie (ˈdudʒɪgɚ and ˈduhɪki)
n. a name for a gadget. Toss me that little red doohickey, will you?