naiad: Meaning and Definition of

nai•ad

1. (sometimes cap.)any of a class of nymphs presiding over rivers and springs.
2. the juvenile form of the dragonfly, damselfly, or mayfly.
3. a female swimmer, esp. an expert one.
4. a plant of the genus Najas, having narrow leaves and solitary flowers.
5. an aquatic nymph.
6. a freshwater mussel.