A 13-year old Indian-origin boy hasemerged as the winner of a spelling bee contest in the US in an epic verbal duel that lasted a total of 95 rounds, after judges ran out of words in a previous marathon round held last month.

Kush Sharma, a seventh-grader at Frontier School of Innovation spelled out "definition" to clinch the Jackson County Spelling Bee title in Missouri, and a berth in the Scripps National Spelling Bee in Washington in May.       

Yesterday's 29-round competition was lengthy in comparison to other spelling bees which typically run for about 20rounds. Sharma won the title in two installments after the judges ran out of words in a previous round held on February22.

Sharma beat fifth-grader Sophia Hoffman, 11, of HighlandPark Elementary to win Missouri county's annual bee contestyesterday, before a packed Kansas City Public Library.

Hoffman missed out after she misspelt the word 'stifling'. Between the two, they spelt over 260 words, including 'barukhzy', 'muumuu', 'hemerocallis', 'jacamar' and 'schadenfreude' in 28 rounds with Sharma clinching the title after correctly spelling the word 'definition' in the 29th round, NBC News reported.