1. to teach someone new skills for a different job or to update their existing skills
2. to train again or differently

Examples

• The company will retrain workers whose jobs were eliminated by automation.
• She decided to retrain as a nurse after losing her factory job.
• The government offers programs to retrain unemployed workers.
• He had to retrain his dog to stop jumping on visitors.
• The athlete needed to retrain her muscles after the injury.
• Many coal miners are being retrained for jobs in renewable energy.
• The coach will retrain the team using new techniques.