Throw it down — and be dying to kick it? (6)
I believe the answer is:
bucket
I believe this is a double definition.
'throw it down' is the first definition.
(both can mean to rain heavily)
'be dying to kick it?' is the second definition.
(as in the phrase 'kick the bucket')
'and' acts as a link.
(Other definitions for bucket that I've seen before include "Container for carrying, sand perhaps" , "Water receptacle" , "Round container for carrying" , "Part of waterwheel" , "Destroy ? dismantle" .)