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overhead-valve engine

American  
[oh-ver-hed-valv] / ˈoʊ vərˌhɛdˈvælv /

noun

  1. I-head engine.

overhead-valve engine British  

noun

  1. US name: valve-in-head engine.  a type of internal-combustion engine in which the inlet and exhaust valves are in the cylinder head above the pistons Compare side-valve engine

"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

Etymology

Origin of overhead-valve engine

First recorded in 1965–70

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.