backdoors

noun

1. 1

   A subsidiary entrance to a building or house at its rear, normally away from the street.

2. 2

   A means of access, often secret and unprotected, to something.

3. 3

   A secret means of access to a program or system.

4. 4

   A rear side door of a car, or at the back of a van.

5. 5

   The anus, generally used in reference to anal sex.

6. 6

   The rear side of the hole, furthest from the golfer.