1.
The ~ of a building, vehicle, road, or machine is the process of keeping it in good condition by regularly checking it and repairing it when necessary.
...~ work on government buildings...
The window had been replaced last week during routine ~.
N-UNCOUNT
2.
Maintenance is money that someone gives regularly to another person to pay for the things that the person needs.
...the government’s plan to make absent fathers pay ~ for their children.
N-UNCOUNT
3.
If you ensure the ~ of a state or process, you make sure that it continues.
...the ~ of peace and stability in Asia.
N-UNCOUNT: usu N of n