mus·​tard | \ ˈmə-stərd How to pronounce mustard (audio) \

Definition of mustard

1a : a pungent yellow condiment consisting of the pulverized seeds of various mustard plants (such as Sinapis alba, Brassica juncea, and B. nigra) either dry or made into a paste or sauce (as by mixing with water or vinegar) and sometimes adulterated with other substances (such as turmeric) or mixed with spices
b : the seed of a mustard plant used as a spice and in medicine as a stimulant and diuretic, an emetic, or a counterirritant
c slang : zest
2 : any of several herbs (genera Brassica and Sinapis of the family Brassicaceae synonym Cruciferae, the mustard family) with lobed leaves, yellow flowers, and linear beaked pods
3 : a dark to moderate yellow

Illustration of mustard

Illustration of mustard

mustard 2

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Other Words from mustard

mustardy \ ˈmə-​stər-​dē How to pronounce mustard (audio) \ adjective

Examples of mustard in a Sentence

Would you like some mustard on your hot dog?
Recent Examples on the Web One is the Curitiba Doogy: a Kayem weiner capped with shredded chicken, cheddar cheese, vinaigrette, potato sticks, green mayo, ketchup, and mustard., 25 May 2021 Many of those planes -- the ones with a slick of bright mustard yellow along the side -- belong to Kenmore Air, a local airline. Julia Buckley, CNN, 19 May 2021 In landing on Prelude’s bright, clean aesthetic—a color palette dominated by a gender-neutral mustard yellow—West was careful to avoid colors that people associate with actual babies. Anna Louie Sussman, The New Yorker, 19 May 2021 Condiments: ketchup, mustard, BBQ sauce, sriracha, etc. Stefani Sassos, Ms, Rdn, Cso, Good Housekeeping, 10 May 2021 Scotland’s landscape is wild and expansive: rugged islands, jagged mountains, moors covered in mustard-yellow gorse. Helen Lewis, The Atlantic, 5 May 2021 Makor, dressed to preach, in black with a mustard-yellow collar, works at the hospital as a nurse. Amy Littlefield, The New Republic, 4 May 2021 Each of the dresses is a vibrant cotton, though my favorite has always been the mustard yellow one with black piping. Lacy Warner, Vogue, 4 May 2021 Back at Coney Island, Mr. Yang declared victory after procuring a hot dog from Nathan’s: ketchup and mustard, no relish or sauerkraut. New York Times, 11 Apr. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mustard.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mustard

13th century, in the meaning defined at sense 1a

History and Etymology for mustard

Middle English, from Anglo-French mustarde, from must must, from Latin mustum

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Time Traveler for mustard

Time Traveler

The first known use of mustard was in the 13th century

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Statistics for mustard

Last Updated

7 Jun 2021

Cite this Entry

“Mustard.” Dictionary, Merriam-Webster, Accessed 13 Jun. 2021.

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English Language Learners Definition of mustard

: a thick and spicy yellow or brownish-yellow sauce that is usually eaten with meat
: a plant with yellow flowers, leaves that can be used for food, and seeds that are used in making mustard
: a brownish-yellow color


mus·​tard | \ ˈmə-stərd How to pronounce mustard (audio) \

Kids Definition of mustard

: a sharp-tasting yellow powder that is prepared from the seeds of a plant related to the cabbage and is used especially as a seasoning for foods


mus·​tard | \ ˈməs-tərd How to pronounce mustard (audio) \

Medical Definition of mustard

1 : a pungent yellow condiment consisting of the pulverized seeds of the black mustard or sometimes the white mustard either dry or made into a paste and serving as a stimulant and diuretic or in large doses as an emetic and as a counterirritant when applied to the skin as a poultice
2 : any of several herbs (genus Brassica of the family Cruciferae, the mustard family) with lobed leaves, yellow flowers, and linear beaked pods — see black mustard sense 1, white mustard

More from Merriam-Webster on mustard

Nglish: Translation of mustard for Spanish Speakers

Britannica English: Translation of mustard for Arabic Speakers Encyclopedia article about mustard


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