waste coal, used as a poor quality fuel; slack.
the stem of a plant, especially of grass or sedge
anthracite, especially when found in small masses
Carbonaceous shale; small coal; slate, dross, or rubbish in coal.
To beat (someone or something) with a stick.
To defeat someone soundly; to annihilate or crush.
To forcefully teach something.
To criticize harshly; to excoriate.