(born 1986), Jamaican athlete; full name Usain St Leo Bolt. At the 2008 Olympic Games in Beijing he won gold medals in the 100 metre and 200 metre races, setting a new world record time for each. He defended his Olympic titles in 2012 and 2016, winning gold in the 100 metre and 200 metre races both years, and becoming the first athlete to win gold in the 100 metre and 200 metre races three times.
Definition of Bolt, Usain in US English:
Bolt, Usain
proper nounboʊltbōlt
(born 1986), Jamaican athlete; full name Usain St. Leo Bolt. At the 2008 Olympic Games in Beijing, he won gold medals in the 100 meter and 200 meter races, setting a new world record time for each. He defended his Olympic titles in 2012 and 2016, winning gold in the 100 meter and 200 meter races both years, and becoming the first athlete to win gold in the 100 meter and 200 meter races three times.