penstock
1. [ noun ] regulator consisting of a valve or gate that controls the rate of water flow through a sluice
Synonyms: sluice_valve floodgate head_gate water_gate sluicegate
Related terms: regulator aboiteau sluice
2. [ noun ] conduit that carries a rapid flow of water controlled by a sluicegate
Synonyms: sluice sluiceway
Related terms: conduit conduit sluicegate sluice sluice
Similar spelling:   penny_stock
  Penstemon
  Penniston
  Pennisetum