The definition of repair and maintain is the process of restoring something to its original condition or keeping it in good working order. This can include repairing broken parts, replacing worn-out components, and performing routine maintenance such as oil changes and tune-ups. Repair and maintenance can be done on anything from a car to a computer, and is essential to keeping things running smoothly and efficiently. It is important to regularly inspect and repair any items that are used frequently or that are subject to wear and tear, as this can help to extend the life of the item and prevent costly repairs down the road. Additionally, performing regular maintenance can help to ensure that any issues are caught early on and can be fixed before they become more serious and expensive.