Here you will find one or more explanations in English for the word Gyropigeon.
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Gyropigeon
Gyropigeon Gy"ro*pi"geon, n. [L. gyrare to revolve + E.
pigeon.]
A flying object simulating a pigeon in flight, when projected
from a spring trap. It is used as a flying target in shooting
matches. --Knight.
Meaning of Gyropigeon from wikipedia