Pinion - Definition

n 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 [syn:
flight feather, pinion, quill, quill feather]
3: wing of a bird [syn: pennon, pinion]
v 1: bind the arms of [syn: pinion, shackle]
2: cut the wings off (of birds)