Cry's partner (3)
I believe the answer is:
hue
'cry's partner' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for hue that I've seen before include "Colour or tint" , "Cast" , "Delicate shade" , "Tone, shade" , "General outburst of alarm or protest - . . . and cry" .)