WordNet
n. a pit whose floor is incandescent lava; "the fire pit of the crater"
Wikipedia
A fire pit or a fire hole can vary from a pit dug in the ground to an elaborate gas burning structure of stone, brick, and metal. The common feature of fire pits is that they are designed to contain fire and prevent it from spreading.
Usage examples of "fire pit".
Eddie watched a handcart pulled through a gap in the raw earth berm around the fire pit.
Droplets splashed from his scales, and struck with a hiss of instantaneous evaporation against the heated stone by the fire pit.
He nudged a pile of debris on the ground which she recognized belatedly as a fire pit stacked with dried dung.
A finger bone slipped under her knee and rolled away into the fire pit.
Without hesitation, Obode raced forward the two steps separating him from the fire pit, seemed to pause momentarily, and then, barefooted, ran through the pit to the place Chiun, stood.