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See Denarius. Penny cress (Bot.), an annual herb of the Mustard family, having round, flat pods like silver pennies (Thlaspi arvense). Dr. Prior. -- Penny dog (Zoöl.), a kind of shark found on the South coast of Britain: the tope. -- Penny father, a penurious person; a niggard. [Obs.] Robinson (More's Utopia). -- Pe…

icken or lobster, mixed with lettuce or other vegetables, and seasoned with oil, vinegar, mustard, and other condiments; as, chicken salad; lobster salad. Salad burnet (Bot.), the common burnet (Poterium Sanguisorba), sometimes eaten as a salad in Italy.

A glucoside found in the seeds of white mustard (Brassica alba, formerly Sinapis alba), and extracted as a white crystalline substance.

A bitter white crystalline nitrogenous substance, obtained indirectly from oil of mustard and ammonia; -- called also allyl melamine.

An alkaloid occuring in the seeds of mustard. It is extracted, in combination with sulphocyanic acid, as a white crystalline substance, having a hot, bitter taste. When sinapine is isolated it is unstable and undergoes decomposition.

A disused generic name for mustard; -- now called Brassica.

A substance extracted from mustard seed and probably identical with sinalbin. [Obs.]

A plaster or poultice composed principally of powdered mustard seed, or containing the volatile oil of mustard seed. It is a powerful irritant.

Of or pertaining to mustard oil; specifically, designating an acid of the oleic acid series said to occur in mistard oil.

A nitrogenous base, CO.(NH.C3H5)2, related to urea, extracted from mustard oil, and also produced artifically, as a white crystalline substance; -- called also diallyl urea.

A glucoside found in the seeds of black mustard (Brassica nigra, formerly Sinapis nigra) It resembles sinalbin, and consists of a potassium salt of myronic acid.

Bot.), a variety of the common tansy with the leaves more dissected than usual. -- Tansy mustard (Bot.), a plant (Sisymbrium canescens) of the Mustard family, with tansylike leaves.

with chambers beneath, built at an angle of the interior polygon of some works. -- Tower mustard (Bot.), the cruciferous plant Arabis perfoliata. -- Tower of London, a collection of buildings in the eastern part of London, formerly containing a state prison, and now used as an arsenal and repository of various object…

.), a partition, as of a pericarp, at right angles with the valves, as in the siliques of mustard.

ecoctions of certain vegetables, as the sap of the birch, sycamore, and the like. Treacle mustard (Bot.), a name given to several species of the cruciferous genus Erysimum, especially the E. cheiranthoides, which was formerly used as an ingredient in Venice treacle, or theriac. -- Treacle water, a compound cordial pre…

hose seeds have the property of expelling worms from the stomach and intestines. Wormseed mustard, a slender, cruciferous plant (Erysinum cheiranthoides) having small lanceolate leaves.