penstock

• POS: Noun
• HYPHEN: pen=stock

CIDE DICTIONARY

penstock, n. [Etymol. uncertain; perh. fr. pen an inclosure + stock.].

•  A close conduit or pipe for conducting water, as, to a water wheel, or for emptying a pond, or for domestic uses.  [1913 Webster]
•  The barrel of a wooden pump.  [1913 Webster]

OXFORD DICTIONARY

penstock, n.
1 a sluice; a floodgate.
2 US a channel for conveying water to a water-wheel.

Etymology

PEN(2) in sense 'mill-dam' + STOCK

THESAURUS

penstock

aboideau, air lock, chute, dock gate, eaves trough, flood-hatch, floodgate, gate, guide, gutter, head gate, lock, lock gate, pentrough, shoot, sluice, sluice gate, tide gate, trough, water gate, weir

ROGET THESAURUS

penstock

Conduit

N conduit, channel, duct, watercourse, race, head race, tail race, abito, aboideau, aboiteau, bito, acequia, acequiador, acequiamadre, arroyo, adit, aqueduct, canal, trough, gutter, pantile, flume, ingate, runner, lock-weir, tedge, vena, dike, main, gully, moat, ditch, drain, sewer, culvert, cloaca, sough, kennel, siphon, piscina, pipe, funnel, tunnel, water pipe, waste pipe, emunctory, gully hole, artery, aorta, pore, spout, scupper, adjutage, ajutage, hose, gargoyle, gurgoyle, penstock, weir, flood gate, water gate, sluice, lock, valve, rose, waterworks, pipeline, vascular.