jet·ty /ˈʤɛti/
 突堤,防波堤,碼頭(a.)黑玉般的,墨黑的,漆黑的(vi.)伸出
 Jet·ty a. Made of jet, or like jet in color.
    The people . . . are of a jetty.   --Sir T. Browne.
 Jet·ty, n.; pl. Jetties
 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 head 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.
 Jet·ty, v. i. To jut out; to project. [Obs.]
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 jetty
      n : a protective structure of stone or concrete; extends from
          shore into the water to prevent a beach from washing away
          [syn: breakwater, groin, groyne, mole, bulwark,
           seawall]