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. 2019
Related Words for petcockvalve, spigot, hydrant, spout, egress, cock, nozzle, petcock, stopcock, bibcock
Examples from the Web for petcock
Historical Examples of 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
Word Origin for petcock
C19: from pet 1 or perhaps French pet, from péter to break wind + cock 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
also pet-cock, 1864, from cock (n.2); the signification of the first element is uncertain.
Online Etymology Dictionary, © 2010 Douglas Harper