Haiku is a very short form of Japanese poetry typically characterised by three qualities:-The essence of haiku is "cutting" (kiru). This is often represented by the juxtaposition of two images or ideas and a kireji ("cutting word") between them, a kind of verbal punctuation mark which signals the moment of separation and colors the manner in which the juxtaposed elements are related.-Traditional haiku consist of 17 on (also known as morae), in three phrases of 5, 7 and 5 on respectively. Any one of the three phrases may end with the kireji. Although haiku are often stated to have 17 syllables, this is inaccurate as syllables and on are not the same.-A kigo (seasonal reference), usually drawn from a saijiki, an extensive but defined list of such words.