quill

definition: a stiff hollow protective spine on a porcupine or hedgehog
example:
speech part: noun
synonyms:
definition: the hollow spine of a feather
example:
speech part: noun
synonyms: calamus shaft
definition: any of the larger wing or tail feathers of a bird
example:
speech part: noun
synonyms: pinion flight feather quill feather
definition: pen made from a bird's feather
example:
speech part: noun
synonyms: quill pen

How quill is being used?