noun /maɪl/
a) A unit of measure (length or distance) equal to 5,280 feet (8 furlongs) in the U.S.Customary/Imperial system of measurements. One mile is equal to 1.609344 km.
The runners competed in the mile.
b) A Roman unit of measure equal to 1000 (double) steps (mille passus or mille passuum) or 5000 Roman feet (approx. 1480m).
The shot missed by a mile.
Wikipedia foundation.