MILEAGE

noun Date: 1754 an allowance for traveling expenses at a certain rate per mile, aggregate length or distance in miles: as, the total miles traveled especially in a given period of time, the amount of service that something will yield especially as expressed in terms of miles of travel, the average number of miles a motor vehicle will travel on a gallon of gasoline that is used as a measure of fuel economy , 3. usefulness , benefit derived from something