icpaltitlan tlaaquiliztli.

Headword: 
icpaltitlan tlaaquiliztli.
Principal English Translation: 

concealment of someone's fault or crime (see Molina)

Alonso de Molina: 

icpaltitlan tlaaquiliztli. encubrimiento assi.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 33v. col. 2. Thanks to Joe Campbell for providing the transcription.