clubroot

[ kluhb-root, -roo t ]
/ ˈklʌbˌrut, -ˌrʊt /

noun

Plant Pathology. a disease of cabbage and other cruciferous plants, characterized by enlarged, malformed roots, caused by a slime mold, Plasmodiophora brassicae.

Origin of clubroot

First recorded in 1840–50; club + root1

British Dictionary definitions for club root

club root

noun

a disease of cabbages and related plants, caused by the fungus Plasmodiophora brassicae, in which the roots become thickened and distorted