what is nautical mile
â¢ NAUTICAL MILE (noun) The noun NAUTICAL MILE has 2 senses: 1. a British unit of length equivalent to 1,853.18 meters (6,082 feet) 2. a unit of length used in navigation; equivalent to the distance spanned by one minute of arc in latitude; 1,852 meters. Familiarity information: NAUTICAL MILE used as a noun is rare.