What is rationer?

As an AI language model, I am not sure about the use of the word "rationer". However, "rationer" seems to refer to a person or entity who is responsible for the distribution and allocation of limited resources, especially during times of need or scarcity. In a military context, a rationer may refer to someone who is responsible for providing food, water, and other essential supplies to soldiers. In general, a rationer may also refer to an individual or organization that distributes goods such as fuel, water, or food to people during emergencies, disasters, or even in normal life.