cubbridge-head

from The Century Dictionary.

• noun Nautical, a partition made of boards, etc., across the forecastle and half-deck of a ship.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Naut.) A bulkhead on the forecastle and half deck of a ship.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun nautical A bulkhead on the forecastle and halfdeck of a ship.