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Meaning of clubroot

club•root

Pronunciation: (klub'rt", -root"), [key]
— n.
  1. a disease of cabbage and other cruciferous plants, characterized by enlarged, malformed roots, caused by a slime mold, Plasmodiophora brassicae.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.