B1to build something again that has been damaged or destroyed: The cathedral was completely rebuilt in 1425 after it had been destroyed by fire.Construction work and workersB2If you rebuild a system or organization, you develop it so that it works effectively: Before the election, the party claimed it would rebuild the country's economy.Making progress and advancingBecoming betterrebuild your lifeB2to try to return to the good situation that you were in before an unpleasant event happened to you: Many people have difficulty in rebuilding their lives when they come out of prison.Restoring and reviving