A disorderly pile of people formed by jumping upon a victim.
To jump into such a pile.
To cause a group of people to lie in a pile upon another, originally as a punishment to the victim on the bottom.
To act similarly with regard to residential density: to live or cause to live in high-density settlements.
A rough fight.
In some team sports, especially soccer, a practice game which does not count on a team's record.
In American football or Canadian football, a play that begins with a snap from the center while opposing teams are on either side of a line of scrimmage.
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To have, or be involved in, a scrimmage.