| Naiad 1. (n.) A water nymph; one of the lower female divinities, fabled to preside over some body of fresh water, as a lake, river, brook, or fountain. 2. (n.) Any species of a tribe (Naiades) of freshwater bivalves, including Unio, Anodonta, and numerous allied genera; a river mussel. 3. (n.) One of a group of butterflies. See Nymph. 4. (n.) Any plant of the order Naiadaceae, such as eelgrass, pondweed, etc. Thesaurus Entries Davy, Davy Jones, Neptune, Nereid, Oceanid, Oceanus, Poseidon, Thetis, Triton, fresh-water nymph, kelpie, limniad, man fish, mermaid, merman, nix, nixie, ocean nymph, sea nymph, sea-maid, sea-maiden, siren, undine, water god, water spirit, water sprite |