something damaged, or corrupted, or a recently impregnated woman, or a hatched white egg (see Molina)
Alonso de Molina:
itlacauhqui. cosa dañada, o corrompida, o muger reziempreñada, o huevo huero y empollado. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 43r. col. 1. Thanks to Joe Campbell for providing the transcription.