atzcalli.

Headword: 
atzcalli.
Principal English Translation: 

an oyster of the sea (see Molina)

IPAspelling: 
ɑtskɑlli
Alonso de Molina: 

atzcalli. ostia dela mar.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 9r. col. 1. Thanks to Joe Campbell for providing the transcription.