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