[ awl-der-flahy ]
/ ˈɔl dərˌflaɪ /
Save This Word!
noun, plural al·der·flies.
any of several dark-colored neuropterous insects of the family Sialidae, the larvae of which are aquatic and predacious on other aquatic insects.
THINGAMABOB OR THINGUMMY: CAN YOU DISTINGUISH BETWEEN THE US AND UK TERMS IN THIS QUIZ?
Do you know the difference between everyday US and UK terminology? Test yourself with this quiz on words that differ across the Atlantic.
Question 1 of 7
In the UK, COTTON CANDY is more commonly known as…
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use alderfly in a sentence
All trout, particularly rainbows, take an alder fly readily.Chats on Angling|H. V. Hart-Davis
I am becoming poetical; let us think how to tie an alder-fly.Prose Idylls|Charles Kingsley
The imitation of the Alder-fly has perhaps been most treated in this way, but it is not alone.Old Flies in New Dresses|Charles Edward Walker
British Dictionary definitions for alderfly
any of various neuropterous insects of the widely distributed group Sialoidea, such as Sialis lutaria, that have large broad-based hind wings, produce aquatic larvae, and occur near water
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012