trunk engine


Definition of trunk engine

1 : a steam engine having a piston rod that is a pipe of sufficient diameter to enable one end of the connecting rod to be attached to the crank and the other end to pass within the pipe and be pivoted to the piston
2 : an engine (as most internal-combustion engines) having a trunk piston

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Cite this Entry

“Trunk engine.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2020.

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