The crossword solutions for the term 'Bolt of Great Speed' are USAIN, which is a reference to Usain Bolt, the Jamaican sprinter who is widely considered to be the fastest person ever. Usain Bolt holds the world record in both the 100m and 200m sprints, and has won eight Olympic gold medals. He is also the only sprinter to win the 'triple-triple', having won three gold medals in three consecutive Olympic Games.