Definition of doohickey in English:

doohickey

Syllabification: doo·hick·ey
Pronunciation: /ˈdo͞oˌhikē
 
/

noun (plural doohickeys)

North American informal
  • A small object or gadget, especially one whose name the speaker does not know or cannot recall: a garage filled with electronic parts and other valuable doohickeys
    More example sentences
    • Clothing, toiletries and miscellaneous technological doohickeys probably called things like ‘datalink’, ‘commpad’ and ‘holocred’ were strewn across the floor in the way of messy rooms everywhere.
    • You'll find no winged doohickeys or portable thingamajigs here.
    • It's not unusual for a single dish to come presented in four, five, even seven separate little trays, boxes, tureens, cups, or assorted doohickeys.
    Synonyms
    thing, so-and so, whatever it's called
    informal whatsit, whatnot, doodad, thingy, thingamajig, thingamabob, what's-its-name, whatchamacallit, whatchacallit

Origin

early 20th century (originally servicemen's slang): blend of doodad and hickey.

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