cylinder head

American  

noun

1. (in a reciprocating engine or pump) a detachable plate or cover on the end opposite to that from which the piston rod or connecting rod projects.

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cylinder head British  

noun

1. Sometimes shortened to: head.  the detachable metal casting that fits onto the top of a cylinder block. In an engine it contains part of the combustion chamber and in an overhead-valve four-stroke engine it houses the valves and their operating mechanisms

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Etymology

Origin of cylinder head

First recorded in 1880–85

Example Sentences

But the U.S. said Friday that Ford’s fix lets fuel drain from a cylinder head hole to the ground below the vehicles.

From Seattle Times • Apr. 12, 2024

"Following a study about the economics of cylinder head suppliers, Renault Group has found another supplier that will start working with us from 2024," a Renault spokesman said.

From Reuters • Aug. 23, 2022

On Nov. 6, a man was injured when he lost his balance and fell on a cylinder head in the engine room.

From Washington Post • Apr. 30, 2021

In EcoMotors’ engine, the pistons face each other, creating a combustion chamber between them, eliminating the need for a cylinder head.

From New York Times • Jun. 20, 2012

These should be cut to shape from 1/16 inch brass, and a hole drilled in the cylinder head 1/8 inch in diameter to accommodate the piston-rod.

From Boys' Book of Model Boats by Yates, Raymond F. (Raymond Francis)