灰(はい)

はい
noun
ash, ashes
1. ash, ashes
The powdery residue left after burning.
灰(はい)を捨(す)てる。
To dispose of ashes.
The paper burned and turned to ash.
I tapped the cigarette ash into the ashtray.
The volcano erupted, and volcanic ash piled up on the town.
火山灰(かざんばい) uses the reading ばい for 灰(はい).
After having a campfire, I make sure to clean up the leftover ashes properly before heading home.

灰(はい) refers to the powdery residue left after burning.

Common expressions

Compounds

Writing

The reading changes in compounds: 灰(はい) alone, but often ~灰(~ばい) in compounds (e.g., 火山灰(かざんばい)).