Real Dictionary

gang
countable noun: A gang is a group of criminals who work together to commit crimes.
countable noun: A gang is a group of people, especially young people, who go around together and often deliberately cause trouble.
countable noun: A gang is a group of workers who do physical work together.
singular noun: The gang is a group of friends who frequently meet.

gang in American English 1
a group of people associated together in some way
intransitive verb: to form or act as a gang
noun: a group or band
transitive verb: to arrange in groups or sets; form into a gang

gang in American English 2
to go or work
intransitive verb: to walk or go

gang in British English 1
noun: a group of people who associate together or act as an organized body, esp for criminal or illegal purposes
verb: to form into, become part of, or act as a gang

gang in British English 2
verb: to go

gang in British English 3
noun