1. dogpile - Noun
2. dogpile - Verb
(US colloquial) A disorderly pile of people formed by jumping upon a victim.
(figuratively, US colloquial) Any similarly disorderly pile of people or things.
(US colloquial, euphemistic) A pile of dogshit.
(US colloquial, transitive, intransitive, often with 'on') To jump into a dogpile.
(figuratively, US, colloquial, transitive, intransitive) To pile on, to overwhelm in other senses.
Source: en.wiktionary.org