Rise and buy someone a drink (5)
I believe the answer is:
stand
'rise' is the definition.
(I've seen this before)
'buy someone a drink' is the wordplay.
I cannot really see how this works, but
'a' could be 'an' and 'an' is located in the answer.
This may be the basis of clue (or it may be nonsense).
'and' acts as a link.
Can you help me to learn more?
(Other definitions for stand that I've seen before include "Watch and do nothing to help" , "principled position" , "Remain unaltered, tolerate" , "Be upright; attitude" , "Remain upright" .)