Nāĭăs — Lewis & Short
Nāĭăs, ădis, and more freq. Nāĭs, ĭdis and ĭdos (f., = *nai+a/s and *nai(s (floating, swimming, that is in the water),
plur. ĭdas),I a water-nymph, Naiad:
illum fontana petebant Numina, Naïades,Ov. M. 14, 328:
Aegle Naïadum pulcherrima,Verg. E. 6, 21:
Naïs Amalthēa,Ov. F. 5, 115.—Poet. of mixing wine with water:
Naïda Bacchus amat,Tib. 3, 6, 57.—Adj.:
puellae Naïdes,Verg. E. 10, 10.—
II Transf., in gen., a nymph (Hamadryad, Nereid):
Naïda vulneribus succidit in arbore factis,Ov. F. 4, 231:
inter Hamadryadas celeberrima Naias,id. M. 1, 691:
Naïdes aequoreae,id. ib. 14, 557.—
III The surname probably of a freedwoman:
Servilia Naïs,Suet. Ner. 3.— Hence, Nāĭcus, a, um, adj., of the Naids, proceeding from the Naids:
dona,Prop. 2, 32, 40.—
B As subst.: Nāĭcus, i, m., a Roman surname, Inscr. Grut. 241, col. 2.— In fem.: † Nāĭcē, Inscr. Fabr. p. 650, n. 433.