Screech from comedian (6)
I believe the answer is:
scream
I believe this clue is a double definition.
'screech' is the first definition.
(I know that screech can be written as scream)
'comedian' is the second definition.
(I've seen this before)
'from' is the link.
(Other definitions for scream that I've seen before include "express horror" , "Utter a piercing cry" , "Screech" , "cry loudly" , "irresistibly funny person" .)