back door meaning and definition

BACK DOOR noun

Definition of back door (noun)

1. a secret or underhand means of access (to a place or a position)
   • "he got his job through the back door"
   • synonyms: backdoor
2. an undocumented way to get access to a computer system or the data it contains
   • synonyms: backdoor
3. an entrance at the rear of a building
   • synonyms: back entrance, backdoor