Haiku in English is a development of the Japanese haiku poetic form in the English language.
Contemporary haiku are written in many languages, but most poets outside of Japan are concentrated in the English-speaking countries.
It is impossible to single out any current style, format, or subject matter as definitive. Some of the more common practices in English include:
Use of three lines of up to 17 syllables;
Use of a season word (kigo);
Use of a cut or kire (sometimes indicated by a punctuation mark) to implicitly compare two images.
A haiku is a non-rhymed verse genre.There are 5 syllables in the first sentence, 7 in the second and 5 again in the last sentence.