Noah Webster
Plug
PLUG, noun A stopple; any piece of pointed wood or other substance used to stop a hole, but larger than a peg or spile.
Hawse-plug, in marine affairs, a plug to stop a hawse-hole.
Shot-plug, a plug to stop a breach made by a cannon ball in the side of a ship.
PLUG, verb transitive To stop with a plug; to make tight by stopping a hole.