scupper

Nautical, an opening in the side of a ship at the level of the deck, or slanting from it, to allow water to run off; also, the gutter or channel surrounding the deck, and leading to such openings: often in the plural.

An opening cut through the waterway and bulwarks of a ship, so that water falling on deck may flow overboard; -- called also scupper hole.

A pipe of leather, canvas, etc., attached to the mouth of the scuppers, on the outside of a vessel, to prevent the water from entering.

A nail with a very broad head, for securing the edge of the hose to the scupper.

A plug to stop a scupper.