The definition of a quill is a stiff feather in a bird's wing or tail, the hollow stem of a feather or the spines from a porcupine.(noun)
An example of a quill is what people used for writing with ink before metal pen tips were invented.
See quill in Webster's New World College Dictionary
Origin: ME quil, hollow stalk, weaver's quill, prob. < MLowG or MDu, as in LowG quiele, quill of a feather < ? IE base *gwel-, to stick, stab
See quill in American Heritage Dictionary 4
Origin: Middle English quil.
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