Drunk unwilling to pay for a round? (5)
I believe the answer is:
tight
'drunk' is the definition.
(slang term)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for tight that I've seen before include "reluctant to buy a round?" , "Rigid; drunk" , "Lit" , "Strictly imposed; drunk" , "Tense; drunk" .)