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 ;