Jetty

Part of speech: noun (n.)

1. A part of a building that jets or projects beyond the rest, and overhangs the wall below.

2. A wharf or pier extending from the shore.

3. A structure of wood or stone extended into the sea to influence the current or tide, or to protect a harbor; a mole; as, the Eads system of jetties at the mouth of the Mississippi River. Jetty ad (Naut.), a projecting part at the end of a wharf; the front of a wharf whose side forms one of the cheeks of a dock.

Part of speech: verb (v.)

To jut out; to project. [Obs.] Florio.

Part of speech: adjective (a.)

Made of jet, or like jet in color. The people . . . are of a jetty. Sir T. Browne.