rosary

Prayer beads, a string of beads used to keep track of repetitions in prayer, particularly of the Roman Catholic Marian prayer "Hail Mary" (Ave Maria).

A Roman Catholic devotion involving the repetition of a series of Marian prayers, usually 5, 15, or 20 decades of "Hail Marys", each decade beginning with "Our Father" and ending with "Glory Be to the Father", but sometimes including other Roman Catholic, Anglican, or Lutheran prayers.