Foretell running out of fortified wine? (7)
I believe the answer is:
portend
'foretell' is the definition.
(synonyms)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for portend that I've seen before include "Betoken; presage" , "Signal" , "Foreshadow" , "Give warning" , "forecast" .)