Definitions
1.NounA tightly packed and disorderly crowd of people."A scrum developed around the bar when free beer was announced."
2.NounA 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."A scrum formed around Scott Brison in the House of Commons lobby shortly after he announced his candidacy for the federal Liberal leadership."
3.NounIn rugby union or rugby league, all the forwards joined together in an organised way.
4.NounIn 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.
5.NounHostile shoving between two groups.
6.VerbTo form a scrum.
7.Proper nounAlternative letter-case form of Scrum.