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also thing·um·a·jig  (thĭng′ə-mə-jĭg′)
n. Informal
Something whose name is unknown or forgotten.

[Alteration of obsolete thingum (from thing) + jig.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


or thing•u•ma•jig

(ˈθɪŋ ə məˌdʒɪg)

a thing for which the speaker does not know or has forgotten the name.
[1870–75; thingum or thingummy (based on thing1) + jig1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thingamajig - something unspecified whose name is either forgotten or not knownthingamajig - something unspecified whose name is either forgotten or not known; "she eased the ball-shaped doodad back into its socket"; "there may be some great new gizmo around the corner that you will want to use"
stuff - miscellaneous unspecified objects; "the trunk was full of stuff"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Beyond white wall paper and plenty of tables and chairs - and not forgetting a small marble water thingamajig on the counter - there's little of note.
It's logical to wonder why anyone would want to sell such an outlandish thingamajig, but the truth is, despite sheer novelty, is its functionality. 
Having worked out that her husband was, indeed, the innocent victim of a technological malfunction over which he had no control - rather than a really smart, pretend-Idon't-know-what-I'm-doing-huckster who'd been caught in the act - she swiped the right thingamajig and switched the whole thing off.
The plot is a classic "thingamajig" story, which bedevils the Bond franchise, the Mission: Impossible films and most superhero movies, so it's somewhat appropriate a soft reboot/sequel to a film about a distinctive crusader would fall prey to this scenario.
Apart from featuring the Australian landscape with its array of unique flora and fauna, Narelle's later works namely Dancing the Boom-cha-cha Boogie (see Figure 2) and The Very Blue Thingamajig (see Figure 6) tackled contemporary and controversial issues such as refugees, diversity and intercultural understanding.
This portable thingamajig is powered by 6x AAA batteries and pumps out label after label for your every need.
He was 2012's X Factor villain - his nickname was Baloney, he loved his nan and he somewhat mystifyingly made it to the final, along with thingamajig and wotsit with the teeth.
Playing on American philosopher Willard Van Orman Quine's 1948 article "On What There is," it can be said that those experts in 1860 failed to figure out the thingamajig that wasn't yet there.
Narelle Oliver is the author-illustrator of a number of award-winning picture books including The Best Beak in Boonaroo Bay, The Hunt, Home, The Very Blue Thingamajig and Baby Bilby Where do You Sleep?
This juvenile fantasy adventure set in the Victorian era, about the hunt for a magical thingamajig whose possessor "can own the world;' is competently mounted and cast, but doesn't cast as much of a spell as intended.
Theme", "What's a Thingamajig Again?", "Thingamajig", "Batter Up", "Jackie", "Time with Tina", "8000 Ft.", "Duck Ellington", "The Ol' Switcheroo", "Pockets", "Til There Was You", "Goodnight My Love", "Fun's Just Begun", and "When I Grow Up".
The scope of a claim to a "thingamajig" cannot be ascertained, so there are many instances in which neither the validity nor infringement analyses can proceed.