cramp ball
noun
a hard round blackish ascomycetous fungus, Daldinia concentrica, characteristically found on the bark of ash trees and formerly carried to ward off cramp. The specific name refers to the concentric rings revealed if the fungus is sliced
Words nearby cramp ball
crambo,
cramer's rule,
crammer,
cramoisy,
cramp,
cramp ball,
cramp iron,
cramp someone's style,
cramped,
cramper,
crampfish