1. Any of the larger wing or tail feathers of a bird
   "The eagle's pinions were damaged, affecting its ability to fly";
   - flight feather, quill, quill feather
    
2. Wing of a bird
   "The owl's pinions were silent in flight";
   - pennon
    
3. A gear with a small number of teeth designed to mesh with a larger wheel or rack
   "The clock's mechanism relied on a series of pinions and wheels"

1. Bind the arms of
   "The captors pinioned the prisoner's arms behind his back";
   - shackle
    
2. Cut the wings off (of birds)
   "The farmer pinioned the geese to prevent them from flying away"

Derived forms: pinioned, pinions, pinioning

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

Part of: bird, birdie [informal], wing

Encyclopedia: Pinion, Arizona