piggy
n. countable A2 Elementary US //ˈpɪɡi// UK //pˈɪɡi// pig·gy
n. a cute or childish name for a small pig. You might also use it to describe someone who eats too much or is being greedy.
n. a juvenile or diminutive term for a pig; by extension, a person perceived as gluttonous or selfish. Often used in nursery language or as a mild, informal insult.
The little piggy ate all the apples in the garden.
She told her brother not to be such a piggy and to share the cookies with everyone.
Usage
Commonly used in the nursery rhyme 'This Little Piggy'; as an insult, it is informal and can be offensive depending on the tone.