IPA: /ˈklʌbˌruːt/
KK: /klʌbˌrut/
A disease that affects certain plants, causing their roots to swell and become misshapen, often seen in cabbages and related vegetables.
The farmer noticed that his cabbage plants were suffering from clubroot, which made their roots look strange and swollen.
The word 'clubroot' is formed from 'club' (from Old English 'clyppe', meaning a heavy stick or cudgel) and 'root' (from Old English 'wyrt', meaning the underground part of a plant). The term 'clubroot' refers to a plant disease characterized by the swelling of the roots, resembling a club shape.
Think of a 'heavy stick' ('club') and the 'underground part of a plant' ('root') — together they describe a disease that causes roots to swell like a club.