penstock /penˈstok/

1. A sluice
2. (in a hydroelectric or other plant) a valve-controlled water conduit

• barrelages
• barrel-bulk
• barrel-bulks
• barrel-chested
• barrelful
• barrelfuls
• barrelhouse
• barrelhouses
• barreling
• barrelled
• barrelling
• barrel organ
• barrel organs
• barrel roll
• barrel rolls
• barrels
• barrel vault
• barrel-vaulted
• barrel vaults
• barren
• barrener
• barrenest
• barrenness
• barrennesses
• barrens