He ran quickly, his legs pumping like pistons.

Meaning: He moved his legs rapidly, propelling himself forward at a fast speed.

Choice of Words: The word "ran" means to move quickly on foot. "Quickly" means at a fast pace. "Legs" are the limbs that humans and animals use to walk or run. "Pumping" means moving up and down or back and forth rapidly. "Pistons" are parts of an engine that move up and down to create power.

Alternative Expressions

Related Expressions