Cast finished speaking (5)
I believe the answer is:
threw
'cast' is the definition.
(cast can mean to throw)
'finished speaking' is the wordplay.
'finished' becomes 'through' (similar in meaning).
'speaking' indicates a 'sounds like' (homophone) clue.
'through' sounds like 'THREW'.
(Other definitions for threw that I've seen before include "Confused" , "produced no-ball" , "Projected through the air" , "Disconcerted" , "Chucked" .)