Sow or boar (3)
I believe the answer is:
pig
I believe this is a double definition.
'sow' is the first definition.
(I've seen this in another clue)
'boar' is the second definition.
(boar is a type of pig)
(Other definitions for pig that I've seen before include "& 16 Animal pen" , "Empress of Blandings?" , "Eg, sow" , "Porcine animal" , "One scoffs" .)