A pig: a dirty or slovenly person.
An MCP; male chauvinist pig.
A pig: a police officer.
Someone or something that oinks.
A pig: a glutton.
A pig: a fat person.
A pig: an animal of the genus Sus.
An unweaned pig, especially one whose carcass is roasted whole on a spit.
The flesh of such a pig cooked and served as a food item.