Malt, sir, can give you wind (7)
I believe the answer is:
mistral
'give you wind' is the definition.
I know that 'wind' relates to this answer. I also know that both the answer and definition are singular nouns
'malt sir can' is the wordplay.
'can' is an anagram indicator (I've seen 'canned' mean this (canned can mean drunk)).
'malt'+'sir'='maltsir'
'maltsir' anagrammed gives 'MISTRAL'.
Can you help me to learn more?
(Other definitions for mistral that I've seen before include "Strong cold dry wind" , "A harsh blow" , "Strong wind down the 20 valley" , "Nice chiller" , "Strong north wind of southern France" .)