/nel"seuhn/ , n.
1. Viscount Horatio , 1758-1805, British admiral.
2. (John) Byron , born 1911, U.S. golf player.
3. a river in central Canada, flowing NE from Lake Winnipeg to Hudson Bay. 400 mi. (645 km) long.
4. a seaport on N South Island, in New Zealand. 42,433.
5. a male given name.