back door

Definitions of back door
1

n an entrance at the rear of a building

Synonyms:
back entrance, backdoor
Type of:
exterior door, outside door
a doorway that allows entrance to or exit from a building

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

“he got his job through the back door
Synonyms:
backdoor
Type of:
access
the act of approaching or entering

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

Synonyms:
backdoor
Type of:
access, access code
a code (a series of characters or digits) that must be entered in some way (typed or dialed or spoken) to get the use of something (a telephone line or a computer or a local area network etc.)

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.