the addition of something to something else (see Molina)
IPAspelling:
tɬɑɑkiːlistɬi
Alonso de Molina:
tlaaquiliztli. añadimiento assi. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 114r. col. 2. Thanks to Joe Campbell for providing the transcription.