Release revolutionary with cap by deadline
I believe the answer is:
time limit
'deadline' is the definition.
(I've seen this before)
'release revolutionary with cap by' is the wordplay.
'release' becomes 'emit' (emitting is a kind of releasing).
'revolutionary' says the letters should be written in reverse.
'with' is a charade indicator (letters next to each other).
'cap by' becomes 'limit' (I've seen this before. I am not sure about the 'by' bit.**).
'emit' back-to-front is 'time'.
'time'+'limit'='TIME-LIMIT'
Can you help me to learn more?
(Other definitions for time limit that I've seen before include "Point before which something must be achieved" , "within which task must be done" , "Prescribed term" , "Deadline" , "maximum duration" .)