back door
noun
RareNot in standard dictionaries
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
A secret means of access to a program or system.
4
A rear side door of a car, or at the back of a van.
5
The anus; (by extension) anal sex.
6
The rear side of the hole, furthest from the golfer.
Thesaurus
Synonyms
Antonyms
#informal#slang