scupper

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.

I have said that our roof was decidedly Biblical in style; but to make it a dry one, something of a nautical character was added to its architecture, for on either side were scuppers, and it was slightly arched in the centre[.]

To thwart or destroy, especially something belonging or pertaining to another.

The bad media coverage scuppered his chances of being elected.

["]The only chance was to get the guns and try a rescue. Of course they may scupper them at once in revenge.["]