upperwing

English

Etymology

From upper +‎ wing.

Noun

upperwing (plural upperwings)

1. The upper part of a wing of a bird or butterfly
   • 2015, Bob Flood, Ashley Fisher, Martin Elliott, Pterodroma Petrels: North Atlantic Seabirds:

     The original article (which see) mentions that the primary shafts on the upperwings lacked any whitish coloration.

Related terms

• wingtip
• underwing