penstock

Meanings

Plural: penstocks

Noun

• regulator consisting of a valve or gate that controls the rate of water flow through a sluice
• conduit that carries a rapid flow of water controlled by a sluicegate
• A sluice or pipe which allows the controlled flow of water from behind a dam, typically routing it to a turbine of a power plant.
• The barrel of a wooden pump.

Synonyms

floodgate, head gate, sluice, sluice valve, sluicegate, sluiceway, water gate