a small valve or faucet used to control the flow of liquid from a container, especially in an engine, a small valve or plug used to release air from a radiator or other container

Formal and Informal Expressions of petcock

In different contexts, you can replace 'petcock' with suitable alternatives. In a more formal setting, 'valve, faucet' is apt. In informal speech or writing, 'tap' is a commonplace synonym.

petcock: Explore its Definition & Usage

petcock Definition

1a small valve or faucet used to control the flow of liquid from a container, especially in an engine
2a small valve or plug used to release air from a radiator or other container

Using petcock: Examples

Take a moment to familiarize yourself with how "petcock" can be used in various situations through the following examples!

Example
The mechanic opened the petcock to drain the oil from the engine.
Example
I need to replace the petcock on my motorcycle's fuel tank.
Example
Turn the petcock to release the air from the radiator.

petcock Synonyms and Antonyms

Synonyms for petcock

valve
faucet
tap

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Summary: petcock in Brief

A 'petcock' [pet-kok] is a small valve or faucet that controls the flow of liquid from a container, typically used in engines or radiators. Examples include 'The mechanic opened the petcock to drain the oil from the engine.' and 'Turn the petcock to release the air from the radiator.' Synonyms include 'valve,' 'faucet,' and 'tap.'