From Longman Dictionary of Contemporary Englishnautical mileˌnautical ˈmile noun [countable] TMa unit for measuring distance at sea, equal to about 1.15 miles or 1,852 metres
Examples from the Corpus
nautical mile• One minute of latitude at the Equator was defined as a nautical mile.From Longman Business Dictionarynautical mileˌnautical ˈmile (also sea mile) a unit for measuring distance at sea, equal to 6,076 feet or 1,852 metres → mile 