techcatl.

Headword: 
techcatl.
Principal English Translation: 

stone over which people were sacrificed as offerings to deities or divinities (see Molina)

Alonso de Molina: 

techcatl. piedra sobre que sacrificauan ymatauan hombres delante los idolos.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 92r. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

techcatl = sacrificial stone
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 116.

themes: 
Nahuales, Sorcery, Divining
Religion (Indigenous)