the GNU version of the Collaborative International Dictionary of English
n. A lining made of brick, stone, or other hard material, as for a well.
The Century Dictionary and Cyclopedia
n. Any kind of path or road paved with small round stones.
n. In architecture, the brick or stone wall or lining of a well or cesspool, the use of which is to prevent the irruption of the surrounding soil. Also steining.