Definify.com
Webster 1913 Edition
Quatrain
Quat′rain
,Noun.
 (Pros.) 
A stanza of four lines rhyming alternately. 
Dryden.
 Webster 1828 Edition
Quatrain
QUAT'RAIN
,Noun.
  A stanza of four lines rhyming alternately.
Definition 2025
quatrain
quatrain
English
Noun
quatrain (plural quatrains)
- a poem in four lines
 -  a stanza of four lines
- Awake! for Morning in the Bowl of Night,
 - Has flung the Stone that puts the stars to flight:
 - And Lo! the Hunter of the East has caught
 - The Sultan's Turret in a Noose of light.
 
 
Translations
a stanza of four lines