A tornada is a short concluding stanza, especially in troubadour poetry, that closes the poem and often addresses a person named in the lyric. It serves a role similar to an envoi: it provides a final turn, summary, or parting message, and is usually shorter than the earlier stanzas.
Example
When the last bells fade from the tower,
I send this song to you, my lady:
keep its small light
as night closes over the road.