A spot or stain made by soot or dirt.

污点；污斑。

A poor quality of soft coal.

劣质之烟煤。

A disease affecting corn, wheat, etc.

黑穗病(一种黍麦之菌病)。

Foul language.

脏话。

To soil or blackened by soot, or affected (a crop or plant) with smut.

使染黑穗病。

To become blackened by soot, or affected by mildew or smut.

因煤黑致黑；生霉；患黑穗病。

To give off soot or dirt.

生煤灰；生污物。