ETYM Old Fren. escopir, escupir, to spit, perhaps for escospir, Latin ex + conspuere to spit upon; pref. con- + spuere to spit. Related to Spit.
Allows water on the deck of a vessel to flow overboard.
Gap in ship's bulwarks for drainage of water.
Hole allowing water to drain from ship's deck.

British; to defeat or put an end to; do in