Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun back_door

3 senses of back door

Sense 1
back door, backdoor -- (a secret or underhand means of access (to a place or a position); "he got his job through the back door")
       => access -- (the act of approaching or entering; "he gained access to the building")

Sense 2
back door, backdoor -- (an undocumented way to get access to a computer system or the data it contains)
       => 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.))

Sense 3
back door, backdoor, back entrance -- (an entrance at the rear of a building)
       => exterior door, outside door -- (a doorway that allows entrance to or exit from a building)