Also found in: Idioms.


(ˈgʌl iˌwɒʃ ər, -ˌwɔ ʃər)

n. Chiefly Midland and Western U.S.
a usu. brief, heavy rainstorm.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Gullywasher. Get-out-of-the-way rain (Orville Dyer, Alpine Springs Assisted Living Center).
An unexpected rainstorm hits, a real "gullywasher." It dumps almost an inch of rain in less than an hour.
We have also had educational reform, and it come a gullywasher. First off, our new Governor, Mark White, shows signs of intelligence above vegetable level, which means he will never make the list of truly great governors, such as Dolph Briscoe, the living Pet Rock.