Found 2 items, similar to back door.
English → English (WordNet) Definition: back door back door n 1: a secret or underhand means of access (to a place or a position); “he got his job through the back door” 2: an entrance at the rear of a building [syn: back entrance]
English → English (gcide) Definition: Back door Back door \Back“ door”\ A door in the back part of a building; hence, an indirect way. --Atterbury. [1913 Webster]