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exhaust fan

American  

noun

  1. a fan for ventilating an interior by drawing air from the interior and expelling it outside.

Etymology

Origin of exhaust fan

First recorded in 1870–75

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.