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tweaker

British  
/ ˈtwiːkə /

noun

  1. slang an engineer's small screwdriver, used for fine adjustments

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Left-arm spinners Matt Kuhnemann and Cooper Connolly were additions to a largely settled 15-man squad, alongside chief tweaker Adam Zampa and part-timer Glenn Maxwell.

From Barron's • Jan. 1, 2026

By bringing “style” into it, Brooks nods to Flaubert’s reputation as a compulsive tweaker, someone who could spend all day reworking a paragraph.

From Washington Post • May 3, 2017

That’s partly because of the seemingly ubiquitous influence of the Atlanta rapper Gucci Mane, the most effective tweaker of hip-hop orthodoxies in the 2000s.

From New York Times • Jul. 27, 2016

Saker is more a strategist than a tweaker of technique and differs from his predecessor Ottis Gibson, to whom Broad is especially close.

From The Guardian • May 13, 2013

Rowan did as he was told and Scythe Rand passed the tweaker all over his body like some sort of magic wand.

From "Scythe" by Neal Shusterman