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penstock n. 水門,水道,水渠 水門,水道,水渠 penstock n 1: regulator consisting of a valve or gate that controls the rate of water flow through a sluice [ synonym: { sluicegate}, { sluice valve}, { floodgate}, { penstock}, { head gate}, { water gate}] 2: conduit that carries a rapid flow of water controlled by a sluicegate [ synonym: { sluice}, { sluiceway}, { penstock}] 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] 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
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