You searched for: “cylinder”
cylinder (s) (noun), cylinders (pl)
A strong metal canister inside a car's engine where fuel is burned to produce heat energy: Most cars have between two and twelve cylinders.

This entry is located in the following unit: Automobile or Related Car Terms (page 2)
cylinder, mathematical
A solid that has two equal-sided circular bases and a third side that joins the bases.
This entry is located in the following unit: Measurements and Mathematics Terms (page 5)