/ ˈrəʊzəri; NAmE ˈroʊ-/ noun ( pl. -ies )
1.
[ C ] a string of beads that are used by some Roman Catholics for counting prayers as they say them
2.
the Rosary [ sing. ] the set of prayers said by Roman Catholics while counting rosary beads
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WORD ORIGIN
late Middle English (in the sense rose garden ): from Latin rosarium rose garden, based on rosa rose.