Leonine verse is a form of rhyme scheme that was popular in the Middle Ages. It refers to a type of rhyme that occurs when the final word in a line of poetry is the same as the first word in the following line. As a result, the verse appears to be divided into two equal parts. There are several synonyms for leonine verse, including "tail rhyme," "interlaced rhyme," and "rhyme royal." All of these terms refer to the same basic concept of rhyming lines that are divided into two halves. The use of leonine verse is still seen today in certain forms of poetry such as sonnets and ballads.