Fiennes, Sir Ran ‧ ulf /ˈrænəlf/ BrE AmE
(1944–) a British ↑ explorer who has been on many trips to the North and South Pole. In 1982 he led the first ↑ expedition (=long and carefully organized journey) to go all the way round the world through the North and South Poles, and in 1993 Fiennes and another explorer, Dr Mike Stroud, walked across Antarctica (=the area around the South Pole) without help from anyone else. In 2003 he ran seven ↑ marathon s in seven days on seven ↑ continent s in order to raise money for ↑ charity .