n.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 sexually mature and attractive young woman.
3. a. The immature form of an insect, such as a grasshopper, that does not pass through a pupal stage during metamorphosis. Nymphs resemble adults but are smaller and lack fully developed wings.
b. The eight-legged immature form of certain arachnids, such as ticks and mites.