Artist bathing, showing result of a fall (9)
I believe the answer is:
rainwater
'result of a fall' is the definition.
(result of rainfall)
'artist bathing' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'bathing' becomes 'in water' (in bathwater).
'ra'+'inwater'='RAINWATER'
'showing' acts as a link.
(Other definitions for rainwater that I've seen before include "Result of downfall" , "that gets to earth!" .)