a system for generating hydroelectric power for peak periods by pumping water from a lower to a higher reservoir during low-demand periods and then releasing it during peak periods.
(in hydroelectric systems) a method of using power at a period of low demand to pump water back up to a high storage reservoir so that it can be released to generate electricity at a period of peak demand
[puhm-per-nik-uh l] /ˈpʌm pərˌnɪk əl/ noun 1. a coarse, dark, slightly sour bread made of unbolted rye. /ˈpʌmpəˌnɪkəl/ noun 1. a slightly sour black bread, originating in Germany, made of coarse rye flour n. “dark rye bread,” 1756, pompernickel, from German (Westphalian dialect) Pumpernickel (1663), originally an abusive nickname for a stupid person, from pumpern […]
[puhm-per] /ˈpʌm pər/ noun 1. a person or thing that . 2. a fire truck specially equipped to water at the site of a fire. n. 1650s, agent noun from pump (v.). As “fire engine that pumps water,” by 1915.
verb See pump fake
noun 1. a shotgun or rifle having a pump-action mechanism. noun 1. a repeating gun operated by a slide-action mechanism feeding ammunition from a magazine under the barrel into the breech