1. one of a numerous class of lesser deities of mythology, conceived of as beautiful maidens inhabiting the sea, rivers, woods, trees, mountains, meadows, etc., and frequently mentioned as attending a superior deity.
2. a beautiful or graceful young woman.
3. a maiden.
4. the young of an insect that undergoes incomplete metamorphosis.

Naiad, Nereid, Oread, Dryad, Hamadryad.
*1. Greek & Roman Mythology Any of numerous minor deities represented as beautiful maidens inhabiting and sometimes personifying features of nature such as trees, waters, and mountains.
2. A girl, especially a beautiful one.

3. The larval form of certain insects, such as silverfish and grasshoppers, usually resembling the adult form but smaller and lacking fully developed wings. Also called nympha.