Last Updated：2025/11/21

A waterproof device in the form of a jacket, which stops one from sinking in water.

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buoyancy aid

Source Word

buoyancy aid

Noun

A waterproof device in the form of a jacket, which stops one from sinking in water.

Japanese Meaning

水に沈まないよう浮力を補助するための、防水性のあるジャケット型の装置

Before we set off on the lake, everyone put on a buoyancy aid to stay safe.

出発する前に、湖に行く全員が安全のために救命胴衣を着用しました。

Sense（1）

A waterproof device in the form of a jacket, which stops one from sinking in water.

buoyancy aids

（ plural ）