Couple falling out of a motor coach put in reverse (4-2)
I believe the answer is:
bust-up
'couple falling out' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'a motor coach put in reverse' is the wordplay.
'a motor coach' becomes 'bus' (I've seen this in another clue).
'in reverse' says the letters should be written in reverse.
'put' back-to-front is 'tup'.
'bus'+'tup'='BUST-UP'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for bust-up that I've seen before include "Serious altercation" , "Quarrel, brawl" , "Argument finishing a relationship" , "disagreement" , "Serious quarrel/fight" .)