1. (noun) pinion
a gear with a small number of teeth designed to mesh with a larger wheel or rack
Synonyms: quill, flight feather, pennon, quill feather
2. (noun) flight feather, pinion, quill, quill feather
any of the larger wing or tail feathers of a bird
Synonyms: quill pen, quill, calamus, flight feather, quill feather, shaft, pinion, pennon
3. (verb) pennon, pinion
wing of a bird
Synonyms: quill, waft, pennant, quill feather, flight feather, pinion, streamer, pennon
4. (verb) pinion, shackle
bind the arms of
Synonyms: shackle, fetter, pinion
5. (verb) pinion
cut the wings off (of birds)
Synonyms: shackle
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Synonyms and Antonyms of pinion 
