mustard oil

noun

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

mustard oil

noun

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

Word History and Origins

Origin of mustard oil¹

First recorded in 1840–50

Example Sentences

A meal begins with complimentary sel roti — rings of honey-sweetened rice bread — accompanied by a bowl of fermented daikon, slick with mustard oil and tossed with mustard and fenugreek seeds.

From Washington Post