Definition of petcock Petcock
pet•cock
We found 3 definitions of petcock from 3 different sources.
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What does petcock mean?
WordNet
NounPlural: petcocks |
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| petcock - regulator consisting of a small cock or faucet or valve for letting out air or releasing compression or draining |
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Wiktionary 
Part of speech
🔤- petcock, noun, singular of petcocks.
