Magma.
The molten rock ejected by a volcano from its crater or fissured sides.
A shade of red, named after the volcanic lava.
See also: Mob (the masses)
A mob cap.
See also: Mob, Mafia (proper noun senses for specific ones)
A group of animals such as horses or cattle.
mobile phone
A large or disorderly group of people; especially one bent on riotous or destructive action.
A group of kangaroos.
A mafia: a group that engages in organized crime.
A non-player character, especially one that exists to be fought or killed to further the progression of the story or game.
A group of Aboriginal people associated with an extended family group, clan group or wider community group, from a particular place or country.
A flock of emus.
To wrap up in, or cover with, a cowl.
To crowd around (someone), sometimes with hostility.
To crowd into or around a place.