Definitions
1.NounA wing.
2.NounThe joint of a bird's wing farthest from the body.
3.NounAny of the outermost primary feathers on a bird's wing.
4.NounA moth of the genus Lithophane.
5.VerbTo cut off the pinion of a bird’s wing, or otherwise disable or bind its wings, in order to prevent it from flying.
6.VerbTo bind the arms of someone, so as to deprive him of their use; to disable by so binding.
7.VerbTo restrain; to limit.
8.NounThe smallest gear in a gear train.