Scream (6)
'scream' is the definition.
(I know that shriek is a more specific form of the action scream)
This is all the clue.
(Other definitions for shriek that I've seen before include "Howl" , "Shrill cry of a shrike" , "Yell, screech" , "Hikers (anag.)" , "Scream or squeal" .)
'scream' is the definition.
(yell can mean to scream or cry out)
This is the entire clue.
(Other definitions for yell that I've seen before include "Clement --, politician" , "Shout loudly" , "Bawl, yowl" , "Scream" , "Shetland isle" .)