pet·cock (p t k k )n. A small valve or faucet used to drain or reduce pressure, as from a boiler. |
petcock [ˈpɛtˌkɒk]
n
(Engineering / Mechanical Engineering) a small valve for checking the water level in a steam boiler or draining condensed steam from the cylinder of a steam engine
[from pet1 or perhaps French pet, from péter to break wind + cock1]
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  petcock - regulator consisting of a small cock or faucet or valve for letting out air or releasing compression or drainingregulator - any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc. |
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