"quills" in the noun sense
1. quill, quill pen
pen made from a bird's feather
2. quill
a stiff hollow protective spine on a porcupine or hedgehog
3. flight feather, pinion, quill, quill feather
any of the larger wing or tail feathers of a bird
4. quill, calamus, shaft
the hollow spine of a feather
Source: WordNet® (An amazing lexical database of English)
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