n. A sacred poem or song, especially one in which expressions of praise and thanksgiving are prominent: usually restricted either to those contained in the Book of Psalms, or to the versifications of these composed for the use of churches, as the Psalms of Tate and Brady, of Watts, etc.n. plural [capitalized] A book of the Old Testament which follows Job and precedes Proverbs, and contains 150 psalms and hymns; more fully, the Book of Psalms.n. plural Among the ancient Jews, the Hagiographa: so called because the Psalms constitute the first book in it.To sing psalms.To celebrate in psalms; hymn.