Gioachino —, composer of operas Otello and The Barber of Seville (7)
I believe the answer is:
rossini
(Other definitions for rossini that I've seen before include "Composer of The Thieving Magpie" , "Staff writer" , "whose barber was in Seville" , "Composer of 'The Barber of Seville' and 'William Tell'" , "Italian composer, 1792-1868" .)