A 14-year-old student from San Antonio, Texas, has won the Scripps National Spelling Bee on her fourth attempt.Harini Logan's victory came late Thursday in the first-ever spell-off tiebreaker of the competition.Logan spelled 21 words correctly during the 90-second spell-off.That was six more than her opponent, 12-year-old Vikram Raju of Aurora, Colorado.The judges said the winning word was "moorhen," which means a female, red grouse bird.Logan's victory came after it appeared that she had answered a question incorrectly during the vocabulary round of the spelling bee.But she was soon reinstated.She defined the word "pullulation" as the nesting of mating birds.But the judges said the correct answer was the swarming of bees."My heart stopped for a second," Harini said.A few minutes later, head judge Mary Brooks said the judges studied the word and her answer.They decided to change their decision: "The answer you gave to that word is considered correct, so we are going to reinstate you."