1. Scalelike structure between the base of the wing and the halter of a two-winged fly
   - calypter 
2. Tuft of small stiff feathers on the first digit of a bird's wing
   - bastard wing, spurious wing

Derived forms: alulae

See also: alular

Type of: feather, plumage, plume, squama

Part of: fly, wing

Encyclopedia: Alula

• mess of pottage
• mess-up
• message
• message pad
• messaging
• messenger
• messenger boy
• messenger RNA
• messiah
• messiahship
• messianic
• Messidor
• messily
• Messina
• messiness
• messmate
• messuage
• messy
• mestiza
• mestizo
• mestranol
• Mesua
• Mesua ferrea
• meta-
• metabola