D defs.my
Entry 4 senses Webster, 1913

Mileage

/(mīl"ā̇j; 48)/ · Mile·age · IPA /ˈmaɪləd͡ʒ/
01 n. An allowance for traveling expenses at a certain rate per mile.
  1. 1.
    An allowance for traveling expenses at a certain rate per mile.
  2. 2.
    Aggregate length or distance in miles; esp., the sum of lengths of tracks or wires of a railroad company, telegraph company, etc.
  3. 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.
  4. 4.
    Use, profit or advantage; as, he got a lot of mileage out of one hit record.
Phrases & compounds
Constructive mileage — a mileage allowed for journeys supposed to be made, but not actually made.