Dry wine for use by pilots (7)
I believe the answer is:
airport
'use by pilots' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'dry wine' is the wordplay.
'dry' becomes 'air' (airing is a kind of drying).
'wine' becomes 'port wine' (port is a kind of wine).
'air'+'port'='AIRPORT'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for airport that I've seen before include "Travel terminus" , "you may expect to fly here" , "Place for planes" , "... [GAULLISM] its founder perhaps" , "passenger terminal" .)