back door

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See also: backdoor


Alternative forms[edit]


  • (file)


back door (plural back doors)

  1. A subsidiary entrance to a building or house at its rear, normally away from the street.
  2. A means of access, often secret and unprotected, to something.
  3. (computer security) A secret means of access to a program or system.
  4. (automotive) A rear side door of a car, or at the back of a van.
  5. (slang) The anus, generally used in reference to anal sex.
  6. (golf, informal) The rear side of the hole, furthest from the golfer.
    • 2010, Bob Glanville, Golf: The Game of Lessening Failures (page 14)
      Sometimes the ball will curve around and enter from the back-door.


Derived terms[edit]



back door (not comparable)

  1. (US, baseball) The path of a pitch which starts outside and then slides over the plate.
    He has a nasty back door slider.
  2. Achieved through indirect means.

Related terms[edit]


back door (third-person singular simple present back doors, present participle back dooring, simple past and past participle back doored)

  1. To attempt to accomplish by indirect means, especially when direct means are proscribed.
  2. (surfing) To enter a tube by accelerating from behind; to surf into an already formed hollow wave, in contrast to the normal method of slowing to allow a surfable wave to form.
    • 1999, Mark Warren, Mark Warren's Atlas of Australian Surfing, traveller's edition 1999, →ISBN, page 103
      If you survive the heavy take-off at 'The Chair' (which is very close to the rocks) you will find you're in 'The Suck-up', which offers either a spectacular barrel or a bonecrunching wipeout, but you might find you have to back door it.


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Further reading[edit]