A latrine is a toilet or an even simpler facility that is used as a toilet within a sanitation system. For example, it can be a communal trench in the earth in a camp to be used as emergency sanitation, a hole in the ground (pit latrine), or more advanced designs, including pour-flush systems.
The term "latrine" is still commonly used in military parlance, and less so in civilian usage except in emergency sanitation situations. Nowadays, the word "toilet" is more commonly used than "latrine", except when referring to simple systems like "pit latrines" or "trench latrines".