the waylaying of one who watches or notices what is being done (see Molina)
Alonso de Molina:
ichtaca tlachializtli. asechanza del que mira y nota lo que se haze. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 32v. col. 2. Thanks to Joe Campbell for providing the transcription.