WordNet
black knot
n. disease of plum and cherry trees characterized by black excrescences on the branches
Usage examples of "black knot".
Then suddenly the advance was balked by a black knot of pain, so intense nothing could pass.
A crimson strand represented Huascar, a black knot the day of his execution at the order of Atahualpa, whose attached strand was purple.
She kept her back to him and her fists clenched tightly at her sides while the anger swirled in a black knot in her stomach.
A group of kif stood there, black knot against the orange-lit accessway, the foremost two holding a large metal cage in which dark things darted and squealed.