'naut mi' definitions:

A former British unit of length equivalent to 6,080 feet (1,853.184 meters); 800 feet longer than a statute mile [syn: nautical mile, naut mi, mile, mi, geographical mile, Admiralty mile]

A unit of length used in navigation; exactly 1,852 meters; historically based on the distance spanned by one minute of arc in latitude [syn: nautical mile, mile, mi, naut mi, knot, international nautical mile, air mile]