quill meaning and definition

QUILL noun

Definition of quill (noun)

1. pen made from a bird's feather
   • synonyms: quill pen
2. a stiff hollow protective spine on a porcupine or hedgehog
3. any of the larger wing or tail feathers of a bird
   • synonyms: flight feather, pinion, quill feather
4. the hollow spine of a feather
   • synonyms: calamus, shaft