Quintain (poetry)

A quintain or pentastich is any poetic form containing five lines. Examples include the tanka, the cinquain, the quintilla and the limerick.
Example.
 <poem>
 All, all a-lonely:
 Three little children sitting on the sand,
 All, all a-lonely,
 Three little children sitting in the sand,
 All, all a-lonely
 Down in the green wood shady―
　 There came an old woman, said Come on with me,
 All, all a-lonely,
 There came an old women, said Come on with me,
 All, all a-lonely,
 Down in the green wood shady―
　 She stuck her pen-knife through their heart,
　 All, all a-lonely,
 She stuck her pen-knife through their heart,
 All, all a-lonely,
 Down in the green wood shady―
　　　　　　　　　　　　--anonymous English Poem
</poem>
<poem>
 Autumn Song
 Know'st thou not at the fall of the leaf 
 How the heart feels a languid grief 
 Laid on it for a covering, 
 And how sleep seems a goodly thing 
 In Autumn at the fall of the leaf? 
 And how the swift beat of the brain 
 Falters because it is in vain, 
 In Autumn at the fall of the leaf 
 Knowest thou not? and how the chief 
 Of joys seems—not to suffer pain? 
 Know'st thou not at the fall of the leaf 
 How the soul feels like a dried sheaf 
 Bound up at length for harvesting, 
 And how death seems a comely thing 
 In Autumn at the fall of the leaf? 
 --Dante Gabriel Rossetti
</poem>