pin

v. t.

  1. To peen.
  2. To inclose; to confine; to pen; to pound.

n.

  1. A piece of wood, metal, etc., generally cylindrical, used for fastening separate articles together, or as a support by which one article may be suspended from another; a peg; a bolt.
  2. Especially, a small, pointed and headed piece of brass or other wire (commonly tinned), largely used for fastening clothes, attaching papers, etc.
  3. Hence, a thing of small value; a trifle.
  4. That which resembles a pin in its form or use
  5. A peg in musical instruments, for increasing or relaxing the tension of the strings.
  6. A linchpin.
  7. A rolling-pin.
  8. A clothespin.
  9. A short shaft, sometimes forming a bolt, a part of which serves as a journal.
  10. The tenon of a dovetail joint.
  11. One of a row of pegs in the side of an ancient drinking cup to mark how much each man should drink.
  12. The bull's eye, or center, of a target; hence, the center.
  13. Mood; humor.
  14. Caligo. See Caligo.
  15. An ornament, as a brooch or badge, fastened to the clothing by a pin; as, a Masonic pin.
  16. The leg; as, to knock one off his pins.
  17. To fasten with, or as with, a pin; to join; as, to pin a garment; to pin boards together.