Wă'ter-lĕv'el, n.
n. 1. The level formed by the surface of still water.
Sense 2. A leveling instrument in which water is employed (commonly in a trough or curved tube) for determining the horizontal line.
n. 1. The level formed by the surface of still water.
Sense 2. A leveling instrument in which water is employed (commonly in a trough or curved tube) for determining the horizontal line.