pinion

(鸟翼的)翼; 翅膀; 羽毛; 昆虫翅的前部; [集合词]翮; [诗]翼

(人的)臂膀; 臂绑

pinion

a bird's wing

the part of a bird's wing including the flight feathers

to hold or bind (the arms) of (a person) so as to restrain or immobilize him

to confine or shackle

to make (a bird) incapable of flight by removing that part of (the wing) from which the flight feathers grow

pinion

a cogwheel that engages with a larger wheel or rack, which it drives or by which it is driven