Castalian, kas-tā′li-an, adj. pertaining to Castalia, a fountain in Parnassus, sacred to Apollo and the Muses.

Castanet, kas′ta-net, n. a musical instrument of percussion in the form of two hollow shells of ivory or hard wood, which are bound together by a band fastening on the thumb, and struck by the fingers to produce a trilling sound in keeping with the rhythm of the music—much used in Spain as an accompaniment to dances and guitars. [Sp. castañeta—L. castanea, a chestnut.]

Caste, käst, n. a term applied chiefly to distinct classes or sections of society in India, and, in a modified sense, to social distinctions of an exclusive nature among other nations.—Lose caste, to descend in social rank. [A name given by the Portuguese to the classes of people in India; Port. casta, breed, race.—L. castus, pure, unmixed.]

Castellan, Castellated. See Castle.

Castigate, kas′tig-āt, v.t. to chastise: to correct: to punish with stripes.—ns. Castigā′tion, act of castigating: chastisement: severe punishment; Cas′tigātor, one who castigates.—adj. Cas′tigātory. [L. castigāre, -ātum, from castus, pure.]

Castilian, kas-til′yan, adj. and n. of or belonging to Castile, a native of Castile, or the language thereof, standard Spanish.—Castile soap, a hard soap made with olive-oil and soda.

Cast-iron. See Iron.

Castle, kas′l, n. a fortified house or fortress: the residence of a prince or nobleman, or a large country mansion generally: anything built in the likeness of such: a defensive tower borne on an elephant's back: a large ship, esp. of war.—v.t. to enclose or fortify with a castle.—v.i. (chess) to bring the castle or rook up to the square next the king, and move the king to the other side of the castle.—n. Cas′tellan, governor or captain of a castle.—adj. Cas′tellated, having turrets and battlements like a castle.—n. Cas′tle-build′ing, the act of building castles in the air or forming visionary projects.—adj. Cas′tled, furnished with castles.—n. Cas′tle-guard, the guard for the defence of a castle.—Castles in the air, or in Spain, groundless or visionary projects.—The Castle, Dublin Castle, the seat of the viceroy and the executive—Castle influence, &c. [A.S. castel—L. castellum, dim. of castrum, a fortified place.]

Castor, kas′tor, n. the beaver: a hat made of its fur. [L.,—Gr. kastōr; cf. Sans. kasturi, musk.]