Puncheon

n.
  1. A figured stamp, die, or punch, used by goldsmiths, cutlers, etc.
  2. (Carp.) A short, upright piece of timber in framing; a short post; an intermediate stud.
  3. A split log or heavy slab with the face smoothed; as, a floor made of puncheons.
  4. A cask containing, sometimes 84, sometimes 120, gallons.