or pet cock
- a small valve or faucet, as for draining off excess or waste material from the cylinder of a steam engine or an internal-combustion engine.
Origin of petcock
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for petcock
One crawled in and settled down, and turned the petcock that inflated the cover.Space Tug
- a small valve for checking the water level in a steam boiler or draining condensed steam from the cylinder of a steam engine
C19: from pet 1 or perhaps French pet, from péter to break wind + cock 1
Word Origin and History for petcock
also pet-cock, 1864, from cock (n.2); the signification of the first element is uncertain.
Online Etymology Dictionary, © 2010 Douglas Harper