Be nosy about the queen providing drink (5)
I believe the answer is:
perry
'drink' is the definition.
(perry is a kind of drink)
'be nosy about the queen' is the wordplay.
'be nosy' becomes 'pry' (to pry is to investigate nosily).
'about' means one lot of letters goes inside another.
'the queen' becomes 'ER' (Elizabeth Regina ie Queen Elizabeth).
'pry' placed around 'er' is 'PERRY'.
'providing' is the link.
(Other definitions for perry that I've seen before include "Alcoholic pear drink" , "Drink made from pears" , "Fred -, British Wimbledon winner nineteen thirty four to nineteen thirty six" , "Pear wine" , "Alcoholic fruit drink" .)