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Noun: penstock  'pen,stók
  1. Regulator consisting of a valve or gate that controls the rate of water flow through a sluice
    - sluicegate, sluice valve, floodgate, head gate, water gate
     
  2. Conduit that carries a rapid flow of water controlled by a sluicegate
    - sluice, sluiceway

Derived forms: penstocks

Type of: conduit, regulator

Encyclopedia: Penstock