Haiku (俳句 high-koo) are short poems that use sensory language to capture a feeling or image. They are often inspired by an element of nature, a moment of beauty or a poignant experience.
Haiku poetry was originally developed by Japanese poets, and the form was adapted to English and other languages by poets in other countries.
-http://www.wikihow.com/Write-a-Haiku-Poem
Traditionally, haiku is written in three lines, with five syllables in the first line,
seven syllables in the second line,
and five syllables in the third line.