gangganggangsgangedganging2verb (gangs, ganging, ganged)gang up on or against somebodyto join together in a group to hurt or frighten somebody: At school the older boys ganged up on him and called him names.gangganggangs1noun1an organized group of criminals: a gang of criminals2a group of young people who spend a lot of time together and often cause trouble or fight against other groups: street gangs3(informal) a group of friends: The whole gang is coming tonight.