What is a cinqiaun poem?

There is no recognized poetic form called "cinqiaun." It seems you might be mistaking it for a similar-sounding form.

Perhaps you are thinking of:

* Cinquain: A five-line poem with a specific syllable count in each line (2, 4, 6, 8, 2). It often focuses on a single subject.

* Cinquain: Another type of cinquain, with a different structure:

* Line 1: Subject (one word)

* Line 2: Description (two words)

* Line 3: Action (three words)

* Line 4: Feeling (four words)

* Line 5: Synonym (one word)

If you can provide more context or the actual poem you are referencing, I might be able to help you identify its form.