Pub is empty after last one leaves (3)
I believe the answer is:
bar
This clue might be a double definition.
'pub' is the first definition.
(both are drinking establishments)
'empty after last one leaves' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'is' acts as a link.
Can you help me to learn more?
(Other definitions for bar that I've seen before include "Barrier; pressure unit" , "Sandbank; prohibit" , "Drinks counter; restriction" , "Shut out" , "Except - lawyers" .)