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

 

open door

 noun
noun
BrE
 
; NAmE
 
 
jump to other results
[singular] a situation that allows something to happen, or that allows people to go to a place or get information without restrictions The government's policy is an open door to disaster. An insecure computer system is an open door to criminals.
See the Oxford Advanced American Dictionary entry: open door