acicamati. nitla. (pret. onitlaacicama.) saber, o entender algo perfectamente. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 2r. col. 2. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
AHCICĀMAT(I) vt to master something, to understand something completely / saber o entender algo perfectamente (M)[(1)Rp.59]. See AHCI, MAT(I). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 5.