1. people who are legally responsible for the care and protection of someone, especially a child whose parents have died or cannot care for them
Usage: plural of guardian
2. people who protect or watch over something important
Usage: plural of guardian

Examples

• The children’s guardians made sure they attended school regularly.
• After their parents died, their aunt and uncle became their legal guardians.
• The museum guardians carefully watched over the priceless artifacts.
• Forest rangers serve as guardians of our national parks.
• The guardians of the ancient temple have protected it for centuries.
• Court-appointed guardians help make decisions for elderly people who cannot care for themselves.