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sprocket hole

American  

noun

  1. any of a series of regular perforations along the edge of photographic film for engaging the drive sprockets in a motion-picture camera or projector.

Etymology

Origin of sprocket hole

First recorded in 1905–10

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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