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.

Thwart or destroy, especially something belonging or pertaining to another; compare scuttle.

A drainage hole on the deck of a ship.

A similar opening in a wall or parapet that allows water to drain from a roof.

drain that allows water on the deck of a vessel to flow overboard

wait in hiding to attack