any artiodactyl mammal of the African and Eurasian family Suidae, esp Sus scrofa (domestic pig), typically having a long head with a movable snout, a thick bristle-covered skin, and, in wild species, long curved tusks
2.
a domesticated pig weighing more than 120 pounds (54 kg)
▶ Related adjective: porcine
3. informal
a dirty, greedy, or bad-mannered person
4.
the meat of swine; pork
5. derogatory, slang
a police officer
6.
a.
a mass of metal, such as iron, copper, or lead, cast into a simple shape for ease of storing or transportation
b.
a mould in which such a mass of metal is formed
7. British informal
something that is difficult or unpleasant
8.
an automated device propelled through a duct or pipeline to clear impediments or check for faults, leaks, etc