scupper Definition

scupper¹
verb scuppered, scuppering

1. colloq
To ruin or put an end to (a plan, an idea, etc).
2. To deliberately sink (a ship).

Etymology: 19c.

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scupper²
noun

1. naut.
A hole or pipe in a ship's side through which water is drained off the deck.
Form: scuppers (usually)

Etymology: 15c: from skopper, perhaps related to scoop.