Shoot over the top (3)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
pot
'shoot' is the definition.
(thesaurus)
'over the top' is the wordplay.
'over' says the letters should be written in reverse.
'top' written backwards gives 'POT'.
(Other definitions for pot that I've seen before include "Bowl" , "Preserve; drug" , "Kitty; marijuana" , "Cooking vessel, plant container and street drug" , "Ceramic container" .)