n. & v.
n. 1 (in full quill-feather) a large feather in a wing or tail. 2 the hollow stem of this. 3 (in full quill pen) a pen made of a quill. 4 (usu. in pl.) the spines of a porcupine. 5 a musical pipe made of a hollow stem.
v.tr. form into cylindrical quill-like folds; goffer. quill-coverts the feathers covering the base of quill-feathers. quilling n.
[ ME prob. f. (M)LG quiele ]