nib /ˈnɪb/
  嘴,鵝管筆的尖端,筆尖(vt.)裝尖頭,削尖,插入
  Neb n.  The nose; the snout; the mouth; the beak of a bird; a nib, as of a pen. [Also written nib.]
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  Nib n.
  1. A small and pointed thing or part; a point; a prong. “The little nib or fructifying principle.”
  2. Zool. The bill or beak of a bird; the neb.
  3. The points of a pen; also, the pointed part of a pen; a short pen adapted for insertion in a holder.
  4. One of the handles which project from a scythe snath; also, [Prov. Eng.], the shaft of a wagon.
  Nib, v. t. [imp. & p. p. Nebbed p. pr. & vb. n. Nibbing.] To furnish with a nib; to point; to mend the point of; as, to nib a pen.
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  nib
       n 1: the writing point of a pen [syn: pen nib]
       2: horny projecting mouth of a bird [syn: beak, bill, neb,
           pecker]
       [also: nibbing, nibbed]