Tercet Example:
From "The Raven" by Edgar Allan Poe:
> Once upon a midnight dreary, while I pondered, weak and weary,
> Over many a quaint and curious volume of forgotten lore—
> When the nights were long and cold, and the days were short and old,
This is a tercet from the famous poem "The Raven". It features three lines with a distinct rhyme scheme (A-B-A). Here, the rhyme scheme is "dreary" - "weary" - "lore."
Another Tercet Example:
From "Ode to a Nightingale" by John Keats:
> My heart aches, and a drowsy numbness pains
> My sense, as though of hemlock I had drunk,
> Or emptied some dull opiate to the drains
This tercet uses the rhyme scheme "pains" - "drains" - "drunk" (A-B-A).
These are just two examples of tercets. They are often used in poetry for their melodious flow and memorable rhyme schemes.