GNU Collaborative International Dictionary of English
Found one definition
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doohickey (?), n. Any object, usually a tool or other device, whose name is forgotten, or not known.
Syn. -- thingumbob, whatchamacallit, whachamacallit.
[PJC]
doohickey (?), n. Any object, usually a tool or other device, whose name is forgotten, or not known.
Syn. -- thingumbob, whatchamacallit, whachamacallit.
[PJC]