To receive dismissal can mean escape (3,3)
I believe the answer is:
get out
'escape' is the definition.
(I've seen this before)
'to receive dismissal can' is the wordplay.
'to receive' becomes 'get' ('get' can be a synonym of 'receive').
'dismissal can' becomes 'out' (I can't explain this - if you can you should give a lot more credence to this answer).
'get'+'out'='GET-OUT'
'mean' is the link.
Can you help me to learn more?
(Other definitions for get out that I've seen before include "Excuse" , "become known" , "Clear off! - escape" .)