![piston noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com piston noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com](https://www.oxfordlearnersdictionaries.com/media/english/fullsize/p/pis/pisto/piston.png)
piston noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com
![2.5L Duratec "Long Rod" and piston kit - 2.5L Duratec "Long Rod" and piston kit Esslinger Engineering | Esslinger racing 2.5L Duratec "Long Rod" and piston kit - 2.5L Duratec "Long Rod" and piston kit Esslinger Engineering | Esslinger racing](https://esslingeracing.com/image/cache/cache/1-1000/244/main/8801-2-5l-duratec-long-rod-and-piston-kit-0-1-750x750.jpg)
2.5L Duratec "Long Rod" and piston kit - 2.5L Duratec "Long Rod" and piston kit Esslinger Engineering | Esslinger racing
![Pristine Pistons: How an Oil Change Can Keep Your Car Engine's Pistons Running Smoothly | Mr. Clean Car Wash Pristine Pistons: How an Oil Change Can Keep Your Car Engine's Pistons Running Smoothly | Mr. Clean Car Wash](https://cdn.dynamixse.com/mrcleancarwashcom/v6enginepistons3dimage.j_215142.jpg)