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1. The wing of a bird.
2. The outer rear edge of the wing of a bird, containing the primary feathers.
3. A primary feather of a bird.
tr.v. pin·ioned, pin·ioning, pin·ions
a. To remove or bind the wing feathers of (a bird) to prevent flight.
b. To cut or bind (the wings of a bird).
a. To restrain or immobilize (a person) by binding the arms.
b. To bind (a person's arms).
3. To bind fast or hold down; shackle.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.