noun
: a meeting of three or more persons in pursuance of a common plan and in such a way as to cause a reasonable apprehension that they will disturb the peace tumultuously
noun
: a meeting of three or more persons in pursuance of a common plan and in such a way as to cause a reasonable apprehension that they will disturb the peace tumultuously
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012