(b.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, winning gold in the 100 metre and 200 metre races.
Bolt, Usain in other Oxford dictionaries
Definition of Bolt, Usain in the US English dictionary