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单词 petcock
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pet•cock  (pet′kok′),USA pronunciation n. 
  1. Buildinga small valve or faucet, as for draining off excess or waste material from the cylinder of a steam engine or an internal-combustion engine.
Also, pet′ cock′. 
  • French pet (see petard) + cock1
  • pet, perh. 1860–65

Collins Concise English Dictionary © HarperCollins Publishers::
petcock /ˈpɛtˌkɒk/ n
  1. a small valve for checking the water level in a steam boiler or draining condensed steam from the cylinder of a steam engine
Etymology: 19th Century: from pet1 or perhaps French pet, from péter to break wind + cock1
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更新时间：2025/7/25 5:36:11