pinion

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pin·ion1 / ˈpinyən/ • n. the outer part of a bird's wing including the flight feathers. ∎ poetic/lit. a bird's wing as used in flight.• v. [tr.] 1. tie or hold the arms or legs of (someone): he pinioned the limbs of his opponents. ∎  bind (the arms or legs) of someone.2. cut off the pinion of (a wing or bird) to prevent flight.pin·ion2 • n. a small gear or spindle engaging with a large gear.

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