gangman
/ˈɡaŋman/ /ˈɡaŋmən/noun
1A member of a gang of workers or labourers; (also) a foreman or overseer of such a gang. Now chiefly Indian English : a member of a gang of workers responsible for maintenance of a section of railway.
2A member of a criminal gang, a gangster. Now rare.
Origin
Mid 19th century. From gang + man. Compare earlier gangsman.