back door, backdoor (noun)

a secret or underhand means of access (to a place or a position)

"he got his job through the back door"

back door, backdoor (noun)

an undocumented way to get access to a computer system or the data it contains

back door, backdoor, back entrance (noun)

an entrance at the rear of a building

back door (Noun)

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

back door (Noun)

A secret means of access to something.

back door (Noun)

The anus, generally used in reference to anal sex.

back door (Verb)

To attempt to accomplish by indirect means, especially when direct means are proscribed.

back door (Verb)

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.

back door (Adjective)

The path of a pitch which starts outside and then slides over the plate.

Back Door

Back Door was a jazz-rock trio, formed in 1971.