something that is thin, weak, and lean (see Molina and Karttunen)
IPAspelling:
pitsɑːwki
Alonso de Molina:
pitzauhqui. delgado, flaco y magro. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 82v. col. 1. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
PITZĀUHQUI something thin, weak, lean / delgado, flaco, y magro (M) [(1)Tp.175]. See PITZĀHU(A). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 197.