D defs.my
Entry 4 senses Webster, 1913

Naiad

/(nā"yăd; 277)/ · Na·iad · IPA /ˈneɪæd/
01 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.
  1. 1.
    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.(Myth.)
  2. 2.
    Any species of a tribe (Naiades) of freshwater bivalves, including Unio, Anodonta, and numerous allied genera; a river mussel.(Zool.)
  3. 3.
    One of a group of butterflies. See Nymph.(Zool) See: Nymph
  4. 4.
    Any plant of the order Naiadaceae, such as eelgrass, pondweed, etc.(Bot.)