Household pet (3)
I believe the answer is:
cat
'household pet' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cat that I've seen before include "Carnivore; whip" , "Feline mammel" , "Animal (domesticated or wild)" , "Sailor's whip with nine knotted strands" , "one's pyjamas? They're an excellent thing" .)