the act of scratching or making lines on something; or, to scrape or scratch the earth (as hens do) (see Molina); or, a type of sacrifice that involved making furrows or scrapes in the body; it was paired with another type of sacrifice, involving the use of arrows; this was practiced by the Toltecas and the Chichimecas used when they conquered altepetl lords (see attestations) (sixteenth century, Quauhtinchan)
a ceremony that involves making stripes
See a scene labeled tlahuahuanaliztli in the Codex Zouche-Nuttall, folio 89.
Another scene that is labeled tlahuahuanaliztli--and is described as gladiatory sacrifice-- comes from the Codex Magliabechiano, folio 30r.
The tlahuahuanaliztli is itself referred to as "gladiatory combat" in a study of a head of Xipe Totec that has been published on line by Dumbarton Oaks.
Olman oncan quipolloque yn chaneque catca yn olmeca oncan quincacalque quiuauanque yehuantin yn tlalpolloque yn icxicouatl yn quetzalteueyac yn tezcauitzil yn tololouitzin = Olman. Allí destruyeron a los habitantes, a los olmeca. Allí los sacrificaron por flechamiento, los "rayaron", ellos Icxicouatl, Quetzalteueyac, Tezcauitzil y Tololuitzin, conquistaron la tierra. (Quauhtinchan, s. XVI)