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alderfly

[ awl-der-flahy ]

noun

, plural al·der·flies.
  1. any of several dark-colored neuropterous insects of the family Sialidae, the larvae of which are aquatic and predacious on other aquatic insects.


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Word History and Origins

Origin of alderfly1

First recorded in 1820–30; alder + fly 1

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alder buckthornalder flycatcher