mustard gas Hear it!

mustard gas definition

mustard gas

an oily, volatile liquid, (CHClCH)S, used in warfare as a poison gas because of its extremely irritating, blistering, and disabling effects

Etymology: from its odor, like that of ground mustard

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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