This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Any of the large predacious winged insects of the order Odonata, which includes the dragonflies and damselflies, characterized by long brightly colored bodies, two pairs of membranous wings, and large compound eyes.

adj. Of or belonging to the order Odonata.

n. large primitive predatory aquatic insect having two pairs of membranous wings

"He is particularly fascinated by butterfly ecology, bird evolution and diversity, odonate habitat choice and breeding, and adaptation to the sea shore by a wide variety of animals, as well as being a keen plantsman (species only, though!)."

insect   

skeeter hawk    mosquito hawk    damselfly    snake feeder    devil's darning-needle    snake doctor    darning needle    sewing needle    dragonfly   

Odonata