Common toothpaste flavor (4)
I believe the answer is:
mint
'common toothpaste flavor' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mint that I've seen before include "Sweet - in perfect condition" , "A bomb" , "and 18 Down: Southern US cocktail" , "Place authorised to make a country's coins" , "There's a lot of money" .)