Psalter

"A psalter is a volume containing the Book of Psalms, often with other devotional material bound in as well, such as a liturgical calendar and litany of the Saints. Until the emergence of the book of hours in the Late Middle Ages, psalters were the books most widely owned by wealthy lay persons. They were commonly used for learning to read. Many Psalters were richly illuminated, and they include some of the most spectacular surviving examples of medieval book art.

The English term (Old English psaltere, saltere) derives from Church Latin. The source term is Latin: psalterium, which is simply the name of the Book of Psalms (in secular Latin, it is the term for a stringed instrument, from Ancient Greek: ψαλτήριον psalterion)." - (en.wikipedia.org 12.04.2021)