Porta Potti
/ˈpɒtɪ/(亦作Portapotti 或 Porta potty)
noun
1- trademark, chiefly N. Amer. a portable building containing a toilet〈商标, 主北美〉带厕所的活动房屋。
1.1
- a chemical toilet, or one connected to a holding tank, in a vehicle or small boat or aircraft（车、船或飞机上的）化学掩臭马桶。