psalter -
The Book of Psalms. Often applied to a book containing the Psalms separately printed.
psalter -
Specifically for Anglicans, the Book of Common Prayer which contains the Book of Psalms. For Catholics, the Breviary containing the Psalms arranged for each day of the week.
psalter -
In the Roman Catholic Church, a rosary consisting of one hundred and fifty beads, corresponding to the number of the Psalms.
Wikipedia
A psalter is a volume containing the Book of Psalms and which often contains other devotional material. Various schemes for the arrangement of the Psalms are described in Latin Psalters. In the early Middle Ages psalters were among the most popular types of illuminated manuscripts, rivaled only by the Gospel Books, from which they gradually took over as the type of manuscript chosen for lavish illumination.
