Psalm (?), n. [OE. psalm, salm, AS. sealm, L. psalmus, psalma, fr. Gr. �, �, fr. � to pull, twitch, to play upon a stringed instrument, to sing to the harp: cf. OF. psalme, salme, F. psaume.] 1. A sacred song; a poetical composition for use in the praise or worship of God.
Humus devout and holy psalms
Singing everlastingly. Milton.
2. Especially, one of the hymns by David and others, collected into one book of the Old Testament, or a modern metrical version of such a hymn for public worship.