Mob
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
An assemblage of many pcople, acting in a violent and disorderly manner, defying the law, and committing or threatening to' commit, depredations upon property or violence to persons.
Alexander v. State, 40 Tex. Cr. R. 395, 50 S. W. 716; Marshall v. Buffalo, 50 App. Div. 149, 64 N. Y. Supp. 411; Champaign County v. Church, 62 Ohio St 318, 57 N. E. 50, 48 In R. A. 738, 78 Am. St Rep. 718.
The word, in legal use, is practically synonymous with "riot," but the latter is the more correct term.