scrub [ˈskrʌb]

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¹ scrub noun

• small bushes and trees
• land that is covered with small bushes and trees

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² scrub noun

• the act of rubbing something hard with a rough object or substance and often with soap in order to clean it : the act of scrubbing something—usually singular
• a powerful cleanser that is used to clean the skin
• special loose clothing that is worn by people who work in hospitals

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³ scrub verb

• to rub (something) hard with a rough object or substance and often with soap in order to clean it
• to decide that (something, such as a game, performance, etc.) will not happen : to cancel (something)