Tlecuil its like a stove. Could be made of adobe or mud or simply Three large stones with a comal (griddle) on top to cook food, tortillas or roast seeds, hot peppers, etc. using firewood as fuel. Me and my family used them for many years.
Synonyms of tlecuil are fogón
Used in US as well
"Calienta los tacos en el tlecuil"