Big-eyed baby (5)
I believe the answer is:
owlet
'big-eyed baby' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for owlet that I've seen before include "who'll give a hoot?" , "Towel (anag)" , "Young nocturnal hunting bird" , "Small bird of prey from Africa and Asia" , "Wise young" .)