The Treochair poetic form is an Irish poetic form with a set syllabic line structure and a repetitive rhyming scheme. Like most Irish poetry use of it utilizes cywddydd (or harmony of sound) such as alliteration, consonance and assonance to help the flow with the rhyming.

Below are the basic rules of the form:

• Each stanza consists of a three-line tercet.
• The first line of each stanza has three syllables, the second line has seven syllables, and the final line of each stanza has seven syllables as well.
• The first and third line of each stanza should rhyme.
• Not only should the poem use cywddydd, but alliteration specifically is a focus.

Later today I will post a treochair that I wrote.

– Jason