n. A deep natural well or sinkhole, especially in Central America, formed by the collapse of surface limestone that exposes ground water underneath, and sometimes used by the ancient Mayans for sacrificial offerings.
The Century Dictionary and Cyclopedia
n. A natural underground reservoir of water, such as is found in the limestone of Yucatan, used by the natives for drawing water: the presence of such reservoirs determines the location of the larger villages.
Word Usage
"The entrance fee into the cenote was about a dollar."