"quills" in the noun sense
1. quill, quill pen
pen made from a bird's feather
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)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License