mustard oil

American  

noun

1. oil expressed from the seed of mustard, used chiefly in making soap.

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mustard oil British  

noun

1. an oil that is obtained from mustard seeds and used in making soap

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Etymology

Origin of mustard oil

First recorded in 1840–50

Example Sentences

Ma cooks the greens with mustard oil, onion seeds, a dash of cumin with tons of green chilies.

From Salon • May 9, 2026

The researchers found that people carrying three so-called Neanderthal variants in the gene SCN9A, which is implicated in sensory neurons, are more sensitive to pain from skin pricking after prior exposure to mustard oil.

From Science Daily • Oct. 10, 2023

Coconut and mustard oil are a stellar combination here, as the sweetness of the coconut tempers the bitterness of the mustard oil and seeds.

From Seattle Times • Apr. 30, 2023

Scallions, micro-cilantro and mustard oil decorate the “garden” naan, a pleasing companion to the saucier items.

From Washington Post • Dec. 24, 2021

I could hardly breathe for the smell of incense and the mustard oil burning in the hundreds of little lamps.

From "Homeless Bird" by Gloria Whelan