| airship |
an aircraft that is lighter than air and can be steered. An airship has an engine and is filled with gas. |
| backfire |
to give off a loud explosive noise that means the engine of a car or other vehicle is not working properly. [2/3 definitions] |
| bonnet |
the British word for the metal lid that covers a car's engine. "Bonnet" has the same meaning as "hood." [1/2 definitions] |
| carburetor |
the part of an engine that makes a mixture of air and gasoline that is burned by the engine when it runs. |
| chassis |
the frame that supports the body and engine in a vehicle. |
| choke |
a device that controls the amount of air in an engine carburetor. [1/4 definitions] |
| clutch1 |
a device for working the gears of an engine, as in a car. [1/4 definitions] |
| diesel engine |
a type of engine that burns fuel oil. Diesel engines are different from most car engines, which use an electric spark to ignite the fuel. In a diesel engine, the fuel is sprayed into a chamber and set on fire by the heat of air that has been put under high pressure. Big trucks have diesel engines. |
| engineer |
one who runs an engine or locomotive. [1/2 definitions] |
| exhaust |
the smoke or gas given off by an engine. [2/4 definitions] |
| fire truck |
a large truck that firefighters ride in to go to a fire and that carries the things firefighters need to put out fires; fire engine. |
| grease |
a thick, oily material used on machine parts, such as those in a car engine. Grease lets the parts rub against one another smoothly while the machine is working. [1/4 definitions] |
| hood |
the metal lid that covers a car's engine. [1/3 definitions] |
| idle |
to run an engine out of gear without causing motion. [1/6 definitions] |
| ignition |
a device for getting something to burn by means of a spark or friction. In a car or other vehicle, the ignition is the device or system that ignites the fuel to start the engine. [1/2 definitions] |
| jet engine |
an engine that causes forward movement by the power of a stream of gases being forced out under pressure in the opposite direction. Jet engines are often used in aircraft. |
| jet-propelled |
using the power of a jet engine or engines. |
| knock |
a sound made by a bad engine. [1/6 definitions] |
| locomotive |
an engine that moves by its own power. It is used to pull or push railroad cars. |
| motorcycle |
a vehicle with two wheels, a heavy frame, and an engine. |
| motor scooter |
a light, two-wheeled, gas-powered vehicle with two small wheels and a seat over the engine for the driver. |