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1. A gear with a small number of teeth designed to mesh with a larger wheel or rack
    
2. Any of the larger wing or tail feathers of a bird
   - flight feather, quill, quill feather
    
3. Wing of a bird
   - pennon

1. Bind the arms of
   - shackle
    
2. Cut the wings off (of birds)

Derived forms: pinioned, pinioning, pinions

Type of: cogwheel, confine, constrain, disable, disenable, gear, gear wheel, geared wheel, hold, incapacitate, plume, restrain, wing

Part of: bird, birdie [informal], wing

Encyclopedia: Pinion