Search Result for "penstock": 
Wordnet 3.0

NOUN (2)

1. regulator consisting of a valve or gate that controls the rate of water flow through a sluice;
[syn: sluicegate, sluice valve, floodgate, penstock, head gate, water gate]

2. conduit that carries a rapid flow of water controlled by a sluicegate;
[syn: sluice, sluiceway, penstock]


The Collaborative International Dictionary of English v.0.48:

Penstock \Pen"stock\, n. [Etymol. uncertain; perh. fr. pen an inclosure + stock.] 1. A close conduit or pipe for conducting water, as, to a water wheel, or for emptying a pond, or for domestic uses. [1913 Webster] 2. The barrel of a wooden pump. [1913 Webster]
WordNet (r) 3.0 (2006):

penstock n 1: regulator consisting of a valve or gate that controls the rate of water flow through a sluice [syn: sluicegate, sluice valve, floodgate, penstock, head gate, water gate] 2: conduit that carries a rapid flow of water controlled by a sluicegate [syn: sluice, sluiceway, penstock]
Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "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