tlaxichtli.

Headword: 
tlaxichtli.
Principal English Translation: 

an arrow, bolt, or spear that may have been shot with a crossbow; hieroglyphs from the Matrícula de Huexotzinco for the personal name Tlaxich show an arrow with notable barbs, typically just on one side

Alonso de Molina: 

tlaxichtli. passador que se tira con ballesta.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 145v. col. 2. Thanks to Joe Campbell for providing the transcription.