1. a person or thing that keeps something safe from harm, damage, or decay
2. a life jacket or other flotation device used to prevent drowning
Usage: nautical

Examples

• The museum curator is a dedicated preserver of ancient artifacts.
• National parks serve as preservers of wildlife and natural habitats.
• Every passenger on the boat was required to wear a life preserver.
• The librarian acted as a preserver of rare manuscripts.
• Coast Guard regulations mandate that all vessels carry adequate preservers.
• She became known as a preserver of local history and traditions.
• The orange life preserver was clearly visible in the water.