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deso

American  
[dez-oh] / ˈdɛz oʊ /

noun

Informal.

  1. designated driver.

Etymology

Origin of deso

First recorded in 2005–10; des(ignated driver) ( def. ) + -o ( def. 1 )

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.