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Pension Benefit Guaranty Corporation
pension off
pension plan
pension reversion
pensionable
pensioner
pensive
penstemon
penstock
pent-
pent-up
penta-
pentachlorophenol
pentacle
pentad
pentadactyl
pentaerythritol
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penstock
pen·stock [ pén stòk ] (plural pen·stocks)


noun 
Definition:
 
water pipe: a sluice, channel, or pipe used to control or supply a flow of water to something such as a hydroelectric plant
[Early 17th century. <pen2 "enclosure"]
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