02n.
A part of a building that jets or projects beyond the rest, and overhangs the wall below.
pl.
Jetties ((#))
1.
A part of a building that jets or projects beyond the rest, and overhangs the wall below.(Arch.)
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.(Hydraul. Engin.)
Phrases & compounds
Jetty head —
a projecting part at the end of a wharf; the front of a wharf whose side forms one of the cheeks of a dock.