Defn: Any species of a tribe (Naiades) of freshwater bivalves, including Unio, Anodonta, and numerous allied genera; a river mussel.
3. (Zoöl)
Defn: One of a group of butterflies. See Nymph.
4. (Bot.)
Defn: Any plant of the order Naiadaceæ, such as eelgrass, pondweed, etc.
NAIANT
Na"iant, a.
Defn: (Her.) See Natant. Crabb.
NAID
Na"id, n. Etym: [See Naiad.] (Zoöl.)
Defn: Any one of numerous species of small, fresh-water, chætopod annelids of the tribe Naidina. They belong to the Oligochæta.
NAIF
Na"ïf` (formerly , a. Etym: [F. naïf. See Naïve.]