Cry over a bit of homework? (3)
I believe the answer is:
mew
'cry' is the definition.
(I know that mew is a type of cry)
'a bit of homework?' is the wordplay.
'a bit of' indicates a hidden word.
'MEW' can be found hidden inside 'homework'.
'over' acts as a link.
(Other definitions for mew that I've seen before include "Cat's sound" , "Animal sound" , "Miaow" , "Cry of a cat or gull" , "Sound made by a cat" .)