matins

Etymology 1

From Middle English matyns, matynes, from Old French matines.

noun

1. Together with lauds, the earliest of the canonical hours; traditionally prayed at sunrise or earlier.
   This chant was sung in many cathedrals both at First Vespers and at Matins for Christmas Day. In Notre Dame and many other churches, however, it was only performed at First Vespers. 2017, Edward H. Roesner, editor, Ars antiqua: Organum, Conductus, Motet, Routledge, page 43
2. Morning prayers.

Etymology 2

noun

1. plural of matin