1. to make better
- The editor improved the manuscript with his changes
2. get better
- The weather improved toward evening
Sentences with improve as a verb:
- Painting the woodwork will improve this house.
- Buying more servers would improve performance.
- I have improved since taking the tablets.
- The error messages have improved since the last version, when they were incomprehensible.
- to improve one's time; to improve his means