"Calvin and Hobbes" girl (5)
I believe the answer is:
susie
'calvin and hobbes girl' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for susie that I've seen before include "Old song: ''If you knew . . . . . like I know . . . . .''" , "Girl" , "Woman" , "Little Susannah" , "Tongue-twister sister sewing shirts for soldiers" .)