Noun
A five-line poetic form which consists of 2, 4, 6, 8 then 2 syllables.
(education) A five-line poetic form set as a writing exercise for children, consisting of one noun, two adjectives, three actions, four feeling words, and the initial noun again.
Source: en.wiktionary.orgCrapsey's American Cinquain form developed in two stages. Source: Internet