scupper: Meaning and Definition of

scup•per

1. a drain at the edge of a deck exposed to the weather, for allowing accumulated water to drain away into the sea or into the bilges. Cf.
2. a drain, closed by one or two flaps, for allowing water from the sprinkler system of a factory or the like to run off a floor of the building to the exterior.
3. any opening in the side of a building, as in a parapet, for draining off rain water.

scup•per

1. to overwhelm; surprise and destroy, disable, or massacre.
2. to prevent from happening or succeeding; ruin; wreck.