Hypertext Webster Gateway: "Jetties"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Jetty \Jet"ty\, n.; pl. {Jetties}. [F. jet['e]e a pier, a jetty,
a causeway. See {Jet} a shooting forth, and cf. {Jutty}.]
1. (Arch.) 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. (Hydraul. Engin.) 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.
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