Tequila cocktail (9)
I believe the answer is:
margarita
'tequila cocktail' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for margarita that I've seen before include "Cocktail consisting of tequila and lemon juice" , "Tequila and lime cocktail" , "Spanish girl" , "Stiff drink" , "Tequila/citrus cocktail" .)