atlan miquiliztli.

atlan miquiliztli.
Principal English Translation: 

a drowning in water (see Molina)

Orthographic Variants: 
atlam miquiliztli
Alonso de Molina: 

atlam miquiliztli. ahogamiento en agua.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 8r. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

fray Pedro Lazaro ... çan mocnonemiltia yn mahuiztililoni huehue tlacatl motemiccamiquilizpahpalehuillia = fray Pedro Lázaro, ... A venerable ancient person, he lives humbly, he helps people with dying all around Mexico. (central Mexico, 1613)
Annals of His Time: Don Domingo de San Antón Muñón Chimalpahin Quauhtlehuanitzin, James Lockhart, Susan Schroeder, and Doris Namala, eds. and transl. (Stanford: Stanford University Press, 2006), 234–235.