hub
1 of 1noun/həb/
Forms:hubs
1
the central part of a wheel where the axle is housed, allowing the wheel to rotate freely
A hub is the central part of a wheel where it attaches to the vehicle. It connects the wheel to the axle and allows it to rotate smoothly. The hub also contains parts that help reduce friction and make the wheel turn efficiently. In addition to supporting the wheel, the hub often has bolts or fasteners that hold the tire in place. Hubs are found on all vehicles with wheels, from cars to bicycles, and are crucial for the vehicle’s movement and stability.
- The mechanic inspected the hub bearings to ensure smooth wheel rotation.
- The racing team upgraded the car's hubs to improve handling and performance.
- The hub of the rear wheels showed signs of wear and needed replacement.
- The manufacturer recommends greasing the hub bearings during routine maintenance.
- The auto shop specializes in refurbishing vintage car hubs for restoration projects.
2
a central or focal point of activity, importance, or connection
- The city is a major transportation hub, connecting flights from around the world.
- The tech hub of the country is home to many startups and innovation centers.
- The kitchen is the hub of the house, where everyone gathers to cook and chat.
- The university is a hub for research and academic excellence.
- The new shopping mall has become a hub for social activities in the area.
3
a central station, airport, etc. that provides passengers with many services