The break a snooker player may need (4)
I believe the answer is:
rest
'the break' is the definition.
(a rest is taking a break)
'a snooker player may need' is the wordplay.
I cannot quite understand how this works, but
'player' could be 'e' (I've seen this in other clues) and 'e' is found in the answer.
The remaining letters 'rst' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for rest that I've seen before include "Remain" , "Relax with residue" , "'''God ... ye, merry gentlemen'' (carol) (4)'" , "Pole in Crucible?" , "Remainder; relax" .)