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.
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