The Collaborative International Dictionary of English v.0.48:
damselfly \damselfly\ n. a slender nonstinging insect similar to but smaller than the dragonfly but having wings folded when at rest. [WordNet 1.5]WordNet (r) 3.0 (2006):
damselfly n 1: slender non-stinging insect similar to but smaller than the dragonfly but having wings folded when at rest