Meaning

• A large or disorderly group of people; especially one bent on riotous or destructive action.

• A group of animals such as horses or cattle.

• A flock of emus.

• The Mafia, or a similar group that engages in organized crime (preceded by the).

• A non-player character, especially one that exists to be fought or killed to further the progression of the story or game.

• The lower classes of a community; the rabble.

• (Australian Aboriginal) A group of Aboriginal people associated with an extended family group, clan group or wider community group, from a particular place or country.

Meaning

• To crowd around (someone), sometimes with hostility.

  "The fans mobbed a well-dressed couple who resembled their idols."

• To crowd into or around a place.

  "The shoppers mobbed the store on the first day of the sale."