Principal English Translation: 

to dye (see Molina)

Alonso de Molina: 

pa. nitla. (pret. onitlapa.) teñir algo con tinta o colores de tintoreros.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 78v. col. 1. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

PĀ vt; pret: PAH to dye something / teñir algo con tinta o colores de tinteros (M) [(6)Cf.31r,32v,64V,128v,(2)Zp.121.192]. M only gives the nonspecific object prefix as compatible with this verb, and it is exclusively so attested in C, but Z gives it as a full transitive verb. T has a synonymous full transitive verb TLAPALLŌTIĀ derived from TLAPAL-LI 'dye.'

PĀLIĀ applic. PĀ.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 182.