exhaust manifold WORD ORIGIN noun Automotive. a component of the exhaust system consisting of a collection of tubes, usually of cast iron, that channel the exhaust gases from the cylinders of an engine to the rest of the exhaust system. Liberaldictionary.com
Origin of exhaust manifold First recorded in 1915–20 Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019