1. Dark-coloured insect having predaceous aquatic larvae
   - alder fly, Sialis lutaria

Derived forms: alderflies

Type of: neuropteran, neuropteron, neuropterous insect

Part of: genus Sialis, Sialis

Encyclopedia: Alderfly

• stay in place
• stay of execution
• stay off
• stay on
• stay over
• stay put
• stay together
• stay up
• stay-at-home
• stayer
• staying power
• Stayman
• Stayman Winesap
• stays
• staysail
• STD
• stead
• steadfast
• steadfastly
• steadfastness
• steadied
• script
• scripted
• scriptorium
• scriptural