Pen n.
  1. A feather. [Obs.]
  2. A wing. [Obs.]
  3. An instrument used for writing with ink, formerly made of a reed, or of the quill of a goose or other bird, but now also of other materials, as of steel, gold, etc. Also, originally, a stylus or other instrument for scratching or graving.
     Graven with an iron pen and lead in the rock.   --Job xix. 24.
  4. Fig.: A writer, or his style; as, he has a sharp pen. “Those learned pens.”
  5. Zool. The internal shell of a squid.
  6.  Zool. A female swan; -- contrasted with cob, the male swan. [Prov. Eng.]
  Bow pen. See Bow-pen.
  Dotting pen, a pen for drawing dotted lines.
  Drawing pen, or Ruling pen, a pen for ruling lines having a pair of blades between which the ink is contained.
  Fountain pen, Geometric pen. See under Fountain, and Geometric.
  Music pen, a pen having five points for drawing the five lines of the staff.
  Pen and ink, or pen-and-ink, executed or done with a pen and ink; as, a pen and ink sketch.
  Pen feather. A pin feather. [Obs.]
  Pen name. See under Name.
  Sea pen Zool., a pennatula. [Usually written sea-pen.]
  Dot·ting pen See under Pun.
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