Knock beers back near the rear of the Lawyer's Bar (5)
I believe the answer is:
estop
'the lawyer's bar' is the definition.
(I've seen this before)
'knock beers back near the rear' is the wordplay.
'knock beers back' becomes 'stop' (I can't justify this - if you can you should give a lot more credence to this answer).
'near' says to put letters next to each other (I've seen this in other clues).
'rear' suggests the final letters (the back of the word).
The last letter of 'the' is 'e'.
'stop' after 'e' is 'ESTOP'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for estop that I've seen before include "Legally check" , "term in law" , "Legal term" , "Preclude certain evidence (at law) - bar (archaic)" , "Hinder, preclude (law)" .)