See under mustard (def 2).
a pungent powder or paste prepared from the seed of the mustard plant, used as a food seasoning or condiment, and medicinally in plasters, poultices, etc.
any of various acrid or pungent plants, especially of the genus Brassica, as B. juncea (leaf mustard) the leaves of which are used for food and B. nigra (black mustard) the chief source of commercial mustard, and Sinapis alba (white mustard)
Compare mustard family.
cut the mustard, Slang. to reach or surpass the desired standard of performance:
a pitcher who cuts the mustard with his fastball.
a Eurasian plant, Brassica (or Sinapsis) nigra, with clusters of yellow flowers and pungent seeds from which the condiment mustard is made: family Brassicaceae (crucifers)
any of several Eurasian plants of the genus Brassica, esp black mustard and white mustard, having yellow or white flowers and slender pods and cultivated for their pungent seeds: family Brassicaceae (crucifers) See also charlock
a paste made from the powdered seeds of any of these plants and used as a condiment
a brownish-yellow colour
(as adjective): a mustard carpet
(slang, mainly US) zest or enthusiasm
(slang) cut the mustard, to come up to expectations
I’m not headlined in the bills, but I’m the mustard in the salad dressing just the same. [O.Henry, “Cabbages and Kings,” 1904]
see: cut the mustard
a social and political movement advocating the separation of blacks and whites and self-government for black people.
nickelic oxide. a gray-black, water-insoluble powder, Ni 2 O 3 , which, at 600°C, decomposes to nickel oxide: used chiefly in storage batteries as an oxidizing agent.
a common weed, Solanum nigrum, of the nightshade family, having poisonous leaves, white flowers, and black edible berries. noun a poisonous solanaceous plant, Solanum nigrum, a common weed in cultivated land, having small white flowers with backward-curved petals and black berry-like fruits
any of several oak trees, as Quercus velutina, characterized by a blackish bark. the hard, durable wood of such a tree, used for making furniture, floors, etc. Historical Examples The Sick-a-Bed Lady Eleanor Hallowell Abbott Everyday Adventures Samuel Scoville Si Klegg, Book 2 (of 6) John McElroy The Sick-a-Bed Lady Eleanor Hallowell Abbott The Story […]