One who records spill (5)
I believe the answer is:
taper
I believe this is a double definition.
'one who records' is the first definition.
(someone who tapes)
'spill' is the second definition.
(thesaurus)
(Other definitions for taper that I've seen before include "Narrow gradually as candle may" , "Become thinner - lighter" , "Thin progressively" , "Get to the point" , "Wind down" .)