A sonnet is a poetic form which originated in Italy; Giacomo Da Lentini is credited with its invention. The term sonnet is derived from the Italian word sonetto (from Old Provençal sonet a little poem, from son song, from Latin sonus a sound). By the thirteenth century it signified a poem of fourteen lines that follows a strict rhyme scheme and specific structure. Conventions associated with the sonnet have evolved over its history. Writers of sonnets are sometimes called “sonneteers”, although the term can be used derisively.