Thrown in a high arc (6)
I believe the answer is:
lobbed
'thrown in a high arc' is the definition.
('lob' can be a synonym of 'throw in a high arc')
This is the entire clue.
(Other definitions for lobbed that I've seen before include "Bowled underhand" , "Propelled in a high arc" , "Threw in high arc as in cricket" , "Hit high in the air" , "Threw (a ball) in a high arc" .)