Faint-hearted person (6)
I believe the answer is:
coward
'faint-hearted person' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for coward that I've seen before include "Yellow-belly" , "with his tail between his legs" , "Blithe Spirit playwright" , "Noel -, twentieth-century actor, dramatist" , "One chicken-hearted" .)