Noun
Mobile Army Surgical Hospital (plural Mobile Army Surgical Hospitals)
A type of dedicated field hospital unit designed to be quickly set up as close to a combat zone as possible to facilitate the immediate treatment of wounded personnel.
In 2006, the U.S. Army said goodbye to its last Mobile Army Surgical Hospital, handing over equipment from the MASH unit to doctors and nurses in Pakistan, the scene of an Oct. 2005 earthquake. Source: Internet