plural quills
plural quills
Learner's definition of QUILL
[count]
1
a : the hollow central part of a feather羽毛管
b : a large, stiff feather from the wing or tail of a bird翎（鸟类翅膀或尾部大而硬直的羽毛）
2
: a pen that is made from a feather翎笔；羽管笔；羽毛笔 — called also quill pen
3
: one of the hollow, sharp parts on the back of a porcupine（豪猪的）棘刺