the bottom of a jar or vessel, where the dregs accumulate (see Molina)
Alonso de Molina:
comitl itzimmanca. hondon de vasija. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 24r. col. 2. Thanks to Joe Campbell for providing the transcription.