ontlapalixti. de dos lados. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 77v. col. 1. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
ŌNTLAPALIXTI on, from both sides / de dos lados (M) [(2)Cf.92v]. See ŌNTLAPAL, -IXTI. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 179.