1. (n.)nautical mile a unit of distance, equal to 6080.20 feet (1853.25 m), formerly used in the U.S. for navigation.
Etymology: (1595–1605; < L < Gk nautílos paper nautilus, lit., sailor, der. of naûs ship)
Definition of 'nautical mile'
Princeton's WordNet
1. (noun)nautical mile, naut mi, mile, mi, geographical mile, Admiralty mile a former British unit of length equivalent to 6,080 feet (1,853.184 meters); 800 feet longer than a statute mile
2. (noun)nautical mile, mile, mi, naut mi, knot, international nautical mile, air 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
Definition of 'nautical mile'
Dictionary of Military and Associated Terms
1. nautical mile A measure of distance equal to one minute of arc on the Earth
Definitions of nautical mile 
