n. 1. An allowance for traveling expenses at a certain rate per mile. [ 1913 Webster ] 2. Aggregate length or distance in miles; esp., the sum of lengths of tracks or wires of a railroad company, telegraph company, etc. [ Written also milage. ] [ 1913 Webster ] 3. The number of miles that a vehicle can travel after consuming a certain quantity of fuel; in the United States, usually expressed in units of miles per gallon; as, smaller cars tend to get better mileage. It is sometimes used as a nmeasure of the energy efficiency of a vehicle. [ PJC ] 4. Use, profit or advantage; as, he got a lot of mileage out of one hit record. [ PJC ]
Constructive mileage, a mileage allowed for journeys supposed to be made, but not actually made. Bartlett. [ 1913 Webster ]
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