The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of various often brightly colored, predatory insects having a long slender body and elongated wings that fold together when the insect is at rest. Also called demoiselle, devil's darning needle.
n. Any of various insects of the suborder Zygoptera that have long slender bodies, and are similar to dragonflies but having wings folded when at rest.
the GNU version of the Collaborative International Dictionary of English
n. a slender nonstinging insect similar to but smaller than the dragonfly but having wings folded when at rest.
The Century Dictionary and Cyclopedia
n. A dragon-fly or devil's darning-needle: so called after the French name of these insects, demoiselle.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. slender non-stinging insect similar to but smaller than the dragonfly but having wings folded when at rest
Word Usage
"Will hope to use it, too, along with Phyllis '"damselfly"."