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. (U.S.)
4.A cask containing, sometimes 84, sometimes 120, gallons.