Definitions

1. noun

fine black particles of carbon resulting from the incomplete combustion of a fuel or other material, especially in a fire.

“The fireplace had a thick layer of soot that needed to be cleaned.”

2. noun

a substance that resembles soot in appearance or properties.

“The mysterious dark substance on the wall was a type of soot.”

3. verb

to cover or stain with soot.

“The chimney sooted the wall with its smoke.”

4. verb

to accumulate or produce soot.

“The old furnace started to soot over time.”