root [ˈruːt]

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¹ root noun

• the part of a plant that grows underground, gets water from the ground, and holds the plant in place
• the part of a tooth, hair, fingernail, etc., that is attached to the body
• the cause or source of something—usually singular

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² root verb

• to grow and develop roots
• to make (a plant) grow and develop roots
• to make (someone) unable to move —usually used as (be) rooted

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³ root verb

• to search for something by moving around or by turning things over
• to look for food under the ground by digging with the nose : grub

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⁴ root verb