Moggy, kitty (4)
I believe the answer is:
puss
I believe this is a double definition.
'moggy' is the first definition.
(I know that puss is a type of moggy)
'kitty' is the second definition.
(I know that kitty can be written as puss)
(Other definitions for puss that I've seen before include "Cat (abbr)" , "For example, a Persian" , "Cat (informal)" , "Booted panto character" , "Feline" .)