Bedeutung von “root” — Learner’s Dictionary

root

noun [ C ] us uk /ruːt/
Pull the weed up by its roots.Plants absorb water through their roots.Many of these roots are edible.Cactuses have extremely long roots.The tree roots prevent the soil from being washed away by heavy rain.
PLANT

B2 the part of a plant that grows under the ground and gets water and food from the soil

HAIR/TOOTH

the part of a hair or tooth that is under the skin

the root of sth

the cause of something, usually something bad:

the root of all evil
→ See also grass roots

(Definition von “root” aus dem Cambridge Learner's Dictionary © Cambridge University Press)