Available Definitions:
1) n. - The act of stopping with a plug.
2) n. - The material of which a plug or stopple is made.
3) n. - A high, tapering silk hat.
4) n. - A worthless horse.
5) n. - A block of wood let into a wall, to afford a hold for nails.
6) v. t. - To stop with a plug; to make tight by stopping a hole.