Dictionary.net

• Norwegian explorer who was the first to traverse the Northwest Passage and in 1911 the first to reach the South Pole (1872-1928)

2006 - WordNet 3.0
By Princeton University

• Norwegian explorer who was the first to traverse the Northwest Passage and in 1911 the first to reach the South Pole (1872-1928)

2011 - English Dictionary Database
By DataStellar Co., Ltd