1. A buoyant device worn around the waist or body to keep a person afloat in water.
Usage: Also called a life jacket or personal flotation device (PFD).; Common in maritime and water safety contexts.
2. A ring-shaped buoyant device thrown to a person in water to help them stay afloat.
Usage: Also called a life ring or life preserver.; Typically found on ships and at swimming pools.

Examples

• All passengers were required to wear a lifebelt during the boat tour.
• The lifeguard threw a lifebelt to the struggling swimmer.
• Children must put on their lifebelts before boarding the ferry.
• The ship was equipped with enough lifebelts for every person on board.
• She grabbed the lifebelt and held on until help arrived.