Get together and have one before closing time (5)
I believe the answer is:
unite
This clue might be a double definition.
'get together' is the first definition.
(uniting is a kind of getting together)
'have one before closing time' is the second definition.
'unite' can be an answer for 'have' (uniting is a kind of having). I am unsure of the 'one before closing time' bit.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for unite that I've seen before include "Couple" , "Pull together" , "Bring together, become one" , "Group of workers" , "Get together" .)