place where things are piled up, or a pile of corn, or the like, or the act of piling something up (see Molina)
Alonso de Molina:
tlacentemaliztli. ayuntamiento, o monton de mayz, o de cosa semejante, o el acto de ayuntallas juntamente en vn lugar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 116v. col. 2. Thanks to Joe Campbell for providing the transcription.