"backdoor" in the noun sense
1. back door, backdoor
an undocumented way to get access to a computer system or the data it contains
2. back door, backdoor, back entrance
an entrance at the rear of a building
3. back door, backdoor
a secret or underhand means of access (to a place or a position
"he got his job through the back door"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License