1. machines that convert energy into mechanical force or motion, especially to power vehicles
2. locomotives or the front cars of trains that pull other cars
3. software programs or systems that perform specific functions
Usage: computing

Examples

• The car’s engine needs regular maintenance to run properly.
• Jet engines power modern aircraft across long distances.
• The train’s two engines pulled twenty freight cars up the mountain.
• Steam engines revolutionized transportation in the 19th century.
• Search engines help users find information on the internet.
• The game uses a powerful graphics engine for realistic visuals.
• Diesel engines are commonly used in trucks and buses.