mileage
    n 1: distance measured in miles [syn: mileage, milage]
    2: the ratio of the number of miles traveled to the number of
       gallons of gasoline burned [syn: mileage, fuel consumption
       rate, gasoline mileage, gas mileage]
    3: a travel allowance at a given rate per mile traveled

Mileage \Mile"age\ (m[imac]l"[asl]j; 48), 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]

MILEAGE. A compensation allowed by law to officers, for their trouble and 
expenses in travelling on public business. 
     2. The mileage allowed to members of congress, is eight dollars for 
every twenty miles of estimated distance, by the most usual roads, from his 
place of residence to the seat of congress, at the commencement and end of 
every session. Act of Jan. 22, 1818; 3 Story, Laws U. S. 1657. 
     3. In computing mileage the distance by the road usually travelled is 
that which must be allowed, whether in fact the officer travels a more or 
less distant way to suit his own convenience. 5 Shepl. R. 431.