A pit of, or for, water; specifically (a) a well or hole sunk in the ground to procure water; (b) a pit for storing water; (c) a pit into which water or sewage is drained.
Origin
Old English; earliest use found in Laws of Aelfred. From water + pit.
Definition of water pit in US English:
water pit
nounˈwɔːtə pɪt
A pit of, or for, water; specifically (a) a well or hole sunk in the ground to procure water; (b) a pit for storing water; (c) a pit into which water or sewage is drained.
Origin
Old English; earliest use found in Laws of Aelfred. From water + pit.