Terribly macho drink (5)
I believe the answer is:
mocha
'drink' is the definition.
(mocha is a kind of drink)
'terribly macho' is the wordplay.
'terribly' is an anagram indicator.
'macho' with letters rearranged gives 'MOCHA'.
(Other definitions for mocha that I've seen before include "Kind of coffee" , "Strong dark coffee" , "Dark brown" , "Kid" , "Arabian coffee" .)