back door Meaning, Definition & Usage
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noun a secret or underhand means of access (to a place or a position)
backdoor.
- he got his job through the back door
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noun an undocumented way to get access to a computer system or the data it contains
backdoor.
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noun an entrance at the rear of a building
backdoor; back entrance.
WordNet
Back" door"
Definitions
A door in the back part of a building; hence, an indirect way. Atterbury.