sick bay noun orsick berth 1.: a compartment in a ship (as a warship or transport) used as a dispensary and hospital 2.: a place (as a ward in a hospital or the infirmary of a school) restricted to the care of the sick or injured < opened sick bays and dispensaries in the refugee camps — Picture Post > < got him back to the palm shack we used as sick bay — J.F.Regan >