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regulator pin

American  

noun

  1. either of two pins on the regulators of certain timepieces, one on each side of the hairspring, that can be moved to adjust the rate of the timepiece.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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