The crossword solution for the term 'King of Nursery Rhyme' is COLE, which is a four-letter word. This term refers to the English poet and songwriter, Edward Cole, who is best known for writing the nursery rhyme 'Old King Cole'. He was born in the late 1700s and wrote many popular nursery rhymes, including 'Humpty Dumpty', 'Little Bo Peep', and 'Hey Diddle Diddle'. His works are still popular today and have been adapted into various forms of media, such as films, television shows, and books.