Noun

• S: (n) pinion (a gear with a small number of teeth designed to mesh with a larger wheel or rack)
• S: (n) flight feather, pinion, quill, quill feather (any of the larger wing or tail feathers of a bird)
• S: (n) pennon, pinion (wing of a bird)

Verb

• S: (v) pinion, shackle (bind the arms of)
• S: (v) pinion (cut the wings off (of birds))