Splash a small dish (8)
I believe the answer is:
splatter
'splash a small dish' is the definition.
'splatter' can be an answer for 'splash' (synonyms). I am unsure of the 'a small dish' bit.
'splash a small dish' is the wordplay.
'splash a small' becomes 's' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'dish' becomes 'platter' (platter is a kind of dish).
's'+'platter'='SPLATTER'
Can you help me to learn more?
(Other definitions for splatter that I've seen before include "Splash, splutter" , "Small amount of something liquid" , "Splash (across)" , "Gruesome sort of film" , "Spatter, splash" .)