Wikipedia
Cuauhxicalli
A cuauhxicalli or quauhxicalli (, sounding somewhat , meaning "eagle gourd bowl") was an altar-like stone vessel used by the Aztecs to hold human hearts extracted in sacrificial ceremonies. A cuahxicalli would often be decorated with animal motifs, commonly eagles or jaguars. Another kind of cuauhxicalli is the Chacmool-type which is shaped as a reclining person holding a bowl on his belly.