Wine merchant runs short after next to no time (7)
I believe the answer is:
moselle
'wine' is the definition.
(Moselle is an example)
'merchant runs short after next to no time' is the wordplay.
'merchant' becomes 'seller' (seller is a kind of merchant).
'runs short' means to remove the last letter (I've seen 'running short' mean this).
'after' is a charade indicator (letters next to each other).
'next to no time' becomes 'mo' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'seller' with its final letter removed is 'selle'.
'selle' after 'mo' is 'MOSELLE'.
Can you help me to learn more?
(Other definitions for moselle that I've seen before include "French or German white wine" , "Light white wine" , "French department" , "Fr. river, department; German wine" , "River; white wine" .)