n. 1 a the Book of Psalms. b a version of this (the English Psalter; Prayer-Book Psalter). 2 a copy of the Psalms, esp. for liturgical use.
[ ME f. AF sauter, OF sautier, & OE (p)saltere f. LL psalterium f. Gk psalterion stringed instrument (psallo pluck), in eccl.L Book of Psalms ]