In rugby union or rugby league, all the forwards joined together in an organised way.
A tightly-packed and disorderly crowd of people.
A tightly packed group of reporters surrounding a person, usually a politician, asking for comments about an issue; an opportunity provided for a politician to be approached this way.
Hostile shoving between two groups.
In Agile software development (specifically Scrum or related methodologies), a daily meeting in which each developer describes what they have been doing, what they plan to do next, and any impediments to progress.
To form a scrum.
Synonym of dogpile, especially in Australian football.
A children's dogpile game.