Small amount of drink allowed after prison sentence is over (7)
I believe the answer is:
driblet
'small amount' is the definition.
(I've seen this before)
'allowed after prison sentence is over' is the wordplay.
'allowed' becomes 'let' (to let is to allow or permit).
'after' says to put letters next to each other.
'prison sentence' becomes 'bird' (to 'do bird' is to serve a prison sentence).
'is over' shows that the letters should be reversed in order.
'bird' in reverse letter order is 'drib'.
'let' put after 'drib' is 'DRIBLET'.
'of drink' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for driblet that I've seen before include "a little water" , "tiny stream" , "Thin stream or drop of liquid" , "tiny bit" , "Very small quantity of a liquid" .)