pinions
名词 pinion:
a gear with a small number of teeth designed to mesh with a larger wheel or rack
同义词:pinion
any of the larger wing or tail feathers of a bird
同义词:flight feather, pinion, quill, quill feather
wing of a bird
动词 pinion:
bind the arms of
cut the wings off (of birds)
同义词:pinion