pig pile UK /ˈpɪɡpʌɪl/US /ˈpɪɡˌpaɪl/verb 3noun 1forms 3 verb3 •(US, informal) To cause a group of people to lie in a pile upon another, originally as a punishment to the victim on the bottom.She made the worst speller lie down on the floor, the next worst on top of him, and so pig-piled the whole class, dressing off the upper one with a shingle. — 1873 •(US, informal) To jump into such a pile.They pig-piled at the very end, and we threw ice cubes on them. — 1989 •(informal, figurative) To act similarly with regard to residential density: to live or cause to live in high-density settlements.We're pig-piling in hot spots. If the entire population were to be given an acre of ground... they wouldn't occupy the state of Texas. — 1957 noun1 •(US, informal) A disorderly pile of people formed by jumping upon a victim.Rolling in a mud-puddle, heels up in the air, amid a mound of humanity, very pertinently called a 'pig-pile'. — 1880 formspig piled · pig piling · pig piles