Wiktionary
reciprocating engines
n. (plural of reciprocating engine English)
Usage examples of "reciprocating engines".
Pitt began probing around the maze of steam pipes leading from the obsolete old steam reciprocating engines and boilers.
He had been around machinery long enough to know that the excess steam from the ship's idle reciprocating engines was blowing off through the bypass valves.
She weighed 46,000 tons, and her reciprocating engines and Parsons-type turbines could generate over fifty thousand horsepower and speed the ship over twenty knots.