1. verb
"Letss gang up on them."
2. noun
a) A number going in company; hence, a company, or a number of persons associated for a particular purpose; a group of laborers under one foreman; a squad
a gang of sailors; a chain gang ; a gang of thieves.
b) A combination of similar implements arranged so as, by acting together, to save time or labor; a set
a gang of saws, or of plows.
Wikipedia foundation.