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English definition of “root”

root

noun [C]     /ruːt/
PLANT B2 the part of a plant that grows under the ground and gets water and food from the soil Parts of plants
HAIR/TOOTH the part of a hair or tooth that is under the skin HairThe teethDentistryProblems with bones, joints and teeth
the root of sth the cause of something, usually something bad : the root of all evil → See also grass rootsOrigins and sources
(Definition of root noun from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “root” in other dictionaries

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