Tlacochcalco Yaotl.

Headword: 
Tlacochcalco Yaotl.
Principal English Translation: 

a deity; "Spear-House Enemy" -- an aspect of Tezcatlipoca, who was sometimes called Yaotl (Enemy), emphasizing his militarism; Tlacochcalco was also a term that designated the cardinal direction north and was part of the name given temples dedicated to Tezcatlipoca (along with Huitznahuac, relating to south)
Fray Bernardino de Sahagún, Primeros Memoriales, ed. Thelma D. Sullivan, et al. (Norman: University of Oklahoma Press, 1997), 110.