Sonnet is a classic poetic form originating from Italy, composed of 14 lines usually written in iambic pentameter. It is known for its structure and rhyme scheme, typically following either the Petrarchan or Shakespearean format. The word "sonnet" derives from the Italian word "sonetto," meaning a small song or little sound. Sonnets are often used to express themes of love, beauty, nature, and mortality, with many famous poets such as Shakespeare, Petrarch, and Elizabeth Barrett Browning using this form to convey their emotions and thoughts. The rigid structure of a sonnet can be challenging, but also rewarding, allowing poets to craft intricate and profound verses that captivate readers with their beauty and depth.