Reward actors into improv (10)
I believe the answer is:
cartoonist
'reward' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'actors into improv' is the wordplay.
'actors into' can be anagrammed to 'CARTOONIST'.
Though, I am not clear how this is indicated.
Can you help me to learn more?
(Other definitions for cartoonist that I've seen before include "Heath Robinson, say" , "Strip artist?" , "Scarfe, say" , "Eg, Peter Brookes" , "one draws" .)