What is a Cinquain?

Cinquain (sink-wain) was invented by an American lady called Adelaide Crapsey. In this type of poem, the syllables are the most important thing. A cinquain has 5 lines (cinq is French for 5) with 2, 4, 6, 8 then 2 syllables in the lines:

LISTEN . . .
With faint dry sound,
Like steps of passing ghosts,
The leaves, frost-crisp'd, break from the trees
And fall.

By Adelaide Crapsey,
from www.theotherpages.org/poems/