Noun

• S: (n) gang, pack, ring, mob (an association of criminals) "police tried to break up the gang"; "a pack of thieves"
• S: (n) crowd, crew, gang, bunch (an informal body of friends) "he still hangs out with the same crowd"
• S: (n) gang, crew, work party (an organized group of workmen)
• S: (n) gang (tool consisting of a combination of implements arranged to work together)

Verb

• S: (v) gang, gang up (act as an organized group)