A small pig, especially a young one. The farmer had a litter of piggies running around the barnyard.
A child's term for a pig, often used affectionately. The children loved visiting the farm to see the piggies.
A piggy bank, a container used by children to save money. She dropped a coin into her piggy every time she received her allowance.
A toe, especially as referred to in the children's nursery rhyme "This little piggy". She counted each piggy as she played with her baby's feet.