pinion

(noun) a gear with a small number of teeth designed to mesh with a larger wheel or rack.

(noun) any of the larger wing or tail feathers of a bird. Synonyms: flight feather, quill, quill feather.

(noun) wing of a bird. Synonyms: pennon.

(verb) bind the arms of. Synonyms: shackle.

(verb) cut the wings off (of birds).