The term THREE-LINE JAPANESE VERSE refers to the poetic form known as HAIKU. HAIKU is a traditional form of Japanese poetry consisting of three lines, with the first and last lines having five syllables and the middle line having seven syllables. It is often used to capture a moment in time or to express a feeling or emotion. HAIKU is a popular form of poetry around the world, and is often used to explore nature and the beauty of the natural world.