Drink to the Queen? Great! (5)
I believe the answer is:
super
'great' is the definition.
(I've seen this before)
'drink to the queen?' is the wordplay.
'drink' becomes 'supe' (I can't justify this - if you can you should believe this answer much more).
'to the queen?' becomes 'r' (r is abbreviation regina. e.g. in ER ).
'supe'+'r'='SUPER'
Can you help me to learn more?
(Other definitions for super that I've seen before include "Excellent; police officer" , "Extremely good" , "Informally terrific, splendid" , "Prefix meaning over-excellent!" , "Informally great, really up there" .)