Definition of pig-pile in US English:

pig-pile

verb

US
informal
  • 1with object Of a person: to cause (a number of people) to lie on top of one another to form a pig pile. Of a number of people: to jump on top of (a person) to form a pig pile.

  • 2no object Of a number of people: to jump on top of another to form a pig pile. Also (and recorded earliest) in hyperbolical use in Town Planning.

Origin

Late 19th century; earliest use found in Ballou's Monthly Magazine. From pig + pile.

Pronunciation

pig-pile

/ˈpɪɡpʌɪl/