inlet

Definitions

General English

General Science

  • noun the mouth of a small river in a coast or lake

Aviation

Construction

  • The surface connection to a closed drain or pipe.
  • The upstream end of any structure through which there is a flow.

Medical

  • noun a passage or opening through which a cavity can be entered

Military

  • noun a place where a lake or the sea cuts into the land
http://www.dictionarycentral.com/definition/inlet.html