1. pig pile - Noun
2. pig pile - Verb
(US colloquial, transitive) To cause a group of people to lie in a pile upon another, originally as a punishment to the victim on the bottom.
(US colloquial, transitive, intransitive) To jump into such a pile.
(figuratively, US colloquial, transitive, intransitive) To act similarly with regard to residential density: to live or cause to live in high-density settlements.
pig pile (plural pig piles)
(US, colloquial) A disorderly pile of people formed by jumping upon a victim.