Funny figures covered in black stuff (7)
I believe the answer is:
comical
'funny' is the definition.
(I know that funny can be written as comical)
'figures covered in black stuff' is the wordplay.
'figures' becomes 'mic' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'covered in' means one lot of letters goes inside another.
'black stuff' becomes 'coal'.
'mic' put into 'coal' is 'COMICAL'.
Can you help me to learn more?
(Other definitions for comical that I've seen before include "Humorous" , "Causing laughter" , "Witty" , "'Amusing, funny (7)'" , "Amusing or droll" .)