Nock, nok, n. the forward upper end of a sail that sets with a boom: a notch, esp. that on the butt-end of an arrow for the string. [Cf. Notch.]
Noctambulation, nok-tam-bū-lā′shun, n. walking in sleep.—ns. Noctam′bulism, sleep-walking; Noctam′bulist, one who walks in his sleep. [L. nox, noctis, night, ambulāre, -ātum, to walk.]
Noctilio, nok-til′i-ō, n. a genus of American bats.
Noctiluca, nok-ti-lū′ka, n. a phosphorescent marine Infusorian, abundant around the British coasts, one of the chief causes of the phosphorescence of the waves.—adjs. Noctilū′cent, Noctilū′cid, Noctilū′cous, shining in the dark. [L. nox, noctis, night, lucēre, to shine.]
Noctivagant, nok-tiv′a-gant, adj. wandering in the night.—n. Noctivagā′tion.—adj. Noctiv′agous. [L. nox, noctis, night, vagāri, to wander.]
Noctograph, nok′to-graf, n. a writing-frame for the blind: an instrument for recording the presence of a night-watchman on his beat.—n. Nocturn′ograph, an instrument for recording work done in factories, &c., during the night. [L. nox, Gr. graphein, to write.]
Noctua, nok′tū-a, n. a generic name variously used—giving name to the Noctū′idæ, a large family of nocturnal lepidopterous insects, strong-bodied moths.—n. Noc′tuid.—adjs. Noctū′idous; Noc′tuiform; Noc′tuoid.
Noctuary, nok′tū-ā-ri, n. an account kept of the events or thoughts of night.
Noctule, nok′tūl, n. a vespertilionine bat. [Fr.,—L. nox, noctis, night.]
Nocturn, nok′turn, n. in the early church, a service of psalms and prayers at midnight or at daybreak: a portion of the psalter used at nocturns. [Fr. nocturne—L. nocturnus—nox, noctis, night.]