Chuck, fling (4)
I believe the answer is:
toss
This clue is a double definition.
'chuck' is the first definition.
(synonyms)
'fling' is the second definition.
(synonyms)
(Other definitions for toss that I've seen before include "Spin of a coin" , "Fling" , "Heads or tails throw" , "ball" , "Careless not to give this" .)