naut mi
       n 1: a British unit of length equivalent to 1,853.18 meters
            (6,082 feet) [syn: nautical mile, mile, mi, geographical
            mile, Admiralty mile]
       2: a unit of length used in navigation; equivalent to the
          distance spanned by one minute of arc in latitude; 1,852
          meters [syn: nautical mile, mile, mi, knot, international
          nautical mile, air mile]