I'm just guessing that maybe you are referring to a male name Kaz, or Kazu, which is normally an abbreviated version (nickname) of longer names such as Kazuo, Kazuhiro, Kazuhiko, Kazutoshi, etc., etc., there are many male names that start with kazu-.
Definition of Quatrain. A quatrain is a verse with four lines, or even a full poem containing four lines, having an independent and separate theme. Often one line consists of alternating rhyme, existing in a variety of forms.
Decasyllabic quatrain is a term used for a poetic form in which each stanza consists of four lines of ten syllables each, usually with a rhyme scheme of AABB or ABAB.he decasyllabic quatrain with an alternating rhyme scheme is often referred to as the heroic quatrain, the heroic stanza or the four-line stave.