The Collaborative International Dictionary
Scupper \Scup"per\, n. [OF. escopir, escupir, to spit, perhaps for escospir, L. ex + conspuere to spit upon; pref. con- + spuere to spit. Cf. Spit, v.] (Naut.) An opening cut through the waterway and bulwarks of a ship, so that water falling on deck may flow overboard; -- called also scupper hole.
Scupper hose (Naut.), 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.
--Totten.
Scupper nail (Naut.), a nail with a very broad head, for securing the edge of the hose to the scupper.
Scupper plug (Naut.), a plug to stop a scupper.
--Totten.
Usage examples of "scupper hole".
Water fell away from her clothes, her hair, in a rush and washed all evidence of her little mishap out through a scupper hole.