back door

Definitions of back door
  1. noun
    an entrance at the rear of a building
    synonyms: back entrance, backdoor
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    type of:
    exterior door, outside door
    a doorway that allows entrance to or exit from a building
  2. noun
    a secret or underhand means of access (to a place or a position)
    “he got his job through the back door
    synonyms: backdoor
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    type of:
    the act of approaching or entering
  3. noun
    an undocumented way to get access to a computer system or the data it contains
    synonyms: backdoor
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    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.)
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