sea cock

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

• In a steamship, a cock or valve close to the vessel's side, for closing a pipe which communicates with the sea.
• The black-bellied plover.
• A gurnard, as the European red gurnard (Trigla pini).

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

• noun nautical Alternative form of seacock.
• noun The black-bellied plover.
• noun A gurnard, such as the European red gurnard (Trigla pini).