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Definition of back door noun from the Oxford Advanced Learner's Dictionary

back door

noun
 
/ˌbæk ˈdɔː(r)/
 
/ˌbæk ˈdɔːr/
Idioms
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  1. the door at the back or side of a buildingTopics Houses and homesb1
Idioms
by/through the back door
  1. in an unfair or indirect way
    • He used his friends to help him get into the civil service by the back door.
See back door in the Oxford Advanced American Dictionary

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