Definition of puncheons:
(n) :
A cask of a certain size; its volume used as a measure of capacity varying from 72 to 120 gallons.
(n) :
A short, upright piece of timber in framing; a short post; an intermediate stud.
(n) :
A piece of roughly dressed timber with one face finished flat (by either hewing or sawing).
(n) :
A split log or heavy slab of timber with the face smoothed, used especially for flooring but also for log cabin walls, piers, or plank roads.
(n) :
A walkway or short, low footbridge over wet ground constructed with such timbers, made by laying one or more planks or dressed timbers over sills set directly on the ground; also called duck boards, bog boards, or bog bridge.
(n) :
A short low bridge of similar construction. Also called puncheon bridge.