◆焼石に水 Yakeishi ni mizu.
- 解釈：焼けた石に、少しばかりの水を掛けても冷めない。援助や努力の力が僅かで、効果が上がらないこと。
- Literal：It is water to the stone which has been burned.
- Interpretation：Since the power of assistance or efforts is slight, it is that an effect does not go up. Nothing but a drop in the bucket.
- 類義：焼石に雀の涙。