petcock means A small valve, spout, or faucet operated by hand, usually used to release pressure or drain fluid. Lexicurio rates it Sui generis — a strength score of 92 out of 100.
noun
- A small valve, spout, or faucet operated by hand, usually used to release pressure or drain fluid.“The doctor placed the rubber mask over her face and turned a dial and I watched Catherine breathing deeply and rapidly. Then she pushed the mask away. The doctor shut off the petcock.”