Kitten's cry (3)
I believe the answer is:
mew
'kitten's cry' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mew that I've seen before include "Cry of a cat or gull" , "Make sound like cat, or a gull" , "Sound made by a cat" , "Animal sound" , "Seagull" .)