noun the book of psalms;
often applied to a book containing the psalms separately printed.
2. psalter ·noun a rosary, consisting of a hundred and fifty beads, corresponding to the number of the psalms.
3. psalter ·noun specifically, the book of psalms as printed in the book of common prayer; among the roman catholics, the part of the breviary which contains the psalms arranged for each day of the week.