alderfly

UK /ˈɔːl.də.flaɪ/ US /ˈɔːl.də.flaɪ/
noun 2

Definitions

noun

1

A member of any one of the 66 species of the family Sialidae of megalopteran insects, each specimen of which has a body length not exceeding one inch and possesses long filamentous antennae and four large dark wings.

2

An artificial fly with brown mottled wings, body of peacock harl, and black legs.

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