noun

• (golf) The area between the tee and the green, where the grass is cut short.
• Any tract of land free from obstacles.
• (military) A channel either from offshore, in a river, or in a harbor that has enough depth to accommodate the draft of large vessels. (JP 4-01.6)
• (nautical) A navigable channel in a harbour, offshore etc; the usual course taken by vessels in such places.