nocturn noun.
['nɒktǝ:n] ME.[Old & mod. French nocturne or ecclesiastical Latin nocturnus, -um use as noun of Latin nocturnus of the night, from noct-, nox night. Cf. NOCTURNE.]Roman Catholic Church. Each of three divisions of the traditional office of matins, including a group of psalms; in
pl. also, matins. Formerly also, each of seven groups of psalms into which the Psalter was divided.
[TahlilGaran] English Dictionary ▲