world's greatest athlete

noun3

1. •
   (slang) the Olympic champion male athlete in the men's decathlon athletics track and field sport
2. •
   (slang) the Olympic champion female athlete in the women's heptathlon athletics track and field sport (the pentathlon was replaced by the heptathlon in Olympic competition for women)
3. •
   (slang, historical) the Olympic champion female athlete in the women's pentathlon athletics track and field sport (the heptathlon replaced the pentathlon in Olympic competition for women)