Face messy tearoom (4)
I believe the answer is:
cafe
'tearoom' is the definition.
(thesaurus)
'face messy' is the wordplay.
'messy' indicates anagramming the letters.
'face' anagrammed gives 'CAFE'.
(Other definitions for cafe that I've seen before include "A small restaurant as in France - face up to it" , "Coffee shop" , "snacks served here?" , "Coffee house" , "It's an eating house - face up to it" .)