noun. slender non-stinging insect similar to but smaller than the dragonfly but having wings folded when at rest.
1. Noun, singular or mass The damselfly also belong to the order Odonata, but is part of the group Zygoptera. 2. Verb, base form Dragonflies are sometimes called "mosquito hawks," and dragonfly and damselfly naiads often feast on mosquito larvae.