tecpatlixcuahua.

Headword: 
tecpatlixcuahua.
Principal English Translation: 

a flint knife that was used in the killing of people for sacrificial offerings to divinities or deities (see Molina)

Orthographic Variants: 
tecpatlixquaua, tecpatlixquahua, tecpatl ixquahua, tecpahtliixcuahua
Alonso de Molina: 

tecpatlixquaua. cuchilla de pedernal, conque sacrificauan y matauan hombres ante los idolos.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 93r. col. 2. Thanks to Joe Campbell for providing the transcription.