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2.
A tiled room, usually adjacent to a locker room, but sometimes constituting an open shower area within a locker room, containing multiple showering positions, usually beneath numerous showerheads affixed to the walls at intervals of about every four feet, and one or more floor drains. The showering positions are sometimes situated around a shower pole or a shower column each of which would have between 4 - 6 showerheads affixed around each column. Gang showers are designed so that a large group of people may shower simultaneously so as to save time and avoid delay. Because they do not contain any dividers or shower stalls, gang showers do not permit for any modesty where the users of such a facility would be showering together simultaneously in the nude. Gang showers are usually designed to accomodate between 10 and 40 users simultaneously, and are usually found in institutional settings, such as at a gymnasium, swimming pool, fitness studio, high school, university, professional sporting venue or in a prison. In the United States, gang showers are segregated by gender, but at some facilities in Europe, particularly at a sauna, both genders may take a coed shower in the gang shower communally at the same time.
After the swim meet, the entire team stripped out of their wet racing suits in the locker room and then showered together in the nude in the gang shower to rinse off the chlorine from the swimming pool.
by Noervenich April 15, 2009
 
1.
A public shower room at a gym, dorm or beach with multiple shower heads so a bunch of dudes can do the nude and shower up at the same time ... and gang bang the smallest guy there. One must be sportin a softy at all times in a gang shower.
Justin: "Hey, Jason. You been workin out?"
Jason: "Yeah, getting tired of being banged in the gang shower every morning."
by Nudie Dude August 25, 2006