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1. A wreath or garland for the head.
2. Roman Catholic Church
a. A string of beads resembling a rosary, used to count iterations in a devotional sequence of prayers.
b. The sequence of prayers counted on such a string of beads.
3. A string of beads.
4. Architecture A small molding carved to resemble a string of beads.
[Middle English chapelet, from Old French, diminutive of chapel, hat, wreath; see chapeau.]