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dex

American  
[deks] / dɛks /

noun

Pharmacology Informal.

  1. short for dextromethorphan.

  2. short for Dexedrine or dextroamphetamine.

verb (used without object)

Slang.
dexed, dexing

  1. to take dangerously large amounts of over-the-counter cough suppressants containing dextromethorphan in order to get high.

Etymology

Origin of dex

First recorded in 1960–65

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.