noun Etymology: pet- (perhaps from petty) + cock Date: circa 1864 a small cock, faucet, or valve for releasing a gas (as air) or draining
PETCOCK
Meaning of PETCOCK in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012