HaikuHaiku in English is a development of the Japanese haiku poetry form.
Most commonly haiku uses
three lines of up to 17 syllables
use of a season word
use of a cut, sometimes with a punctuation mark, to compare two images.
The idea is basically to paint a picture using few words and without "showing all".
Here is my (winning !) entry for Writers Online One Word Challenge on the word SHIMMER
leaves shimmering afterglow
on butterfly wings