Is “Petcock” a Scrabble word?
Yes
PETCOCK
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Petcock
/ˈpɛtkɒk/
noun
1.A small valve, spout, or faucet operated by hand, usually used to release pressure or drain fluid.