Meat course diminished dashing W (9)
I believe the answer is:
lambrusco
'w' is the definition.
I know nothing about this answer so I can't judge whether this works.
'meat course diminished dashing' is the wordplay.
'meat' becomes 'lamb' (lamb is a kind of meat).
'diminished' means to remove the last letter.
'dashing' indicates an anagram (dash can mean hit or destroy).
'course' with its last letter taken away is 'cours'.
'cours' is an anagram of 'rusco'.
'lamb'+'rusco'='LAMBRUSCO'
Can you help me to learn more?
(Other definitions for lambrusco that I've seen before include "Sparkling Italian wine" , "Medium sweet, semi-sparkling Italian red or white wine" , "Type of Italian wine" .)