Well

 
בְּאֵר Strong’s #875 be’er

Wherefore the well was called Beer-lahai-roi; behold, it is between Kadesh and Bered.

Genesis 16:14

https://biblehub.com/hebrew/875.htm

Ancient wells were holes dug down in the ground to the water table. The well was usually covered over with a large rock to keep debris out and prevent people from falling in. The stone was removed and a bucket tied to a rope was lowered to retrieve the water. As nomads, the Ancient Hebrews knew the locations of many wells in the area of their journeys. City wells were usually inside the city walls, so that its inhabitants had access to water during sieges. Some wells were so large a winding staircase was cut in the sides of the well for people to descend down into the well. In the case of the Siloam well, located outside the city, a tunnel from inside the city to the well was cut through solid rock.