horseradish

[ hawrs-rad-ish ]
/ ˈhɔrsˌræd ɪʃ /

noun

a cultivated plant, Armoracia rusticana, of the mustard family, having small, white flowers.
the pungent root of this plant, ground and used as a condiment and in medicine.
the condiment itself, sometimes moistened with vinegar or mixed with ground beets.

adjective

of or containing ground horseradish as a flavoring: brisket of beef with horseradish sauce.

Origin of horseradish

First recorded in 1590–1600; horse + radish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for horseradish

horseradish

/ (ˈhɔːsˌrædɪʃ) /

noun

a coarse Eurasian plant, Armoracia rusticana, cultivated for its thick white pungent root: family Brassicaceae (crucifers)
the root of this plant, which is ground and combined with vinegar, etc, to make a sauce

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012