kilometre

from WordNet (r) 3.0 (2006)

kilometre
    n 1: a metric unit of length equal to 1000 meters (or 0.621371
         miles) [syn: {kilometer}, {kilometre}, {km}, {klick}]

from The Collaborative International Dictionary of English v.0.48

Kilometer \Kil"o*me`ter\, Kilometre \Kil"o*me`tre\, n. [F.
   kilometre. See {Kilogram}, and {Meter}.]
   A measure of length, being a thousand meters. It is equal to
   3,280.84 feet, or 0.62137119 of a mile.
   [1913 Webster]