guard [ˈgɑɚd]

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¹ guard noun

• a state in which someone is carefully looking for possible danger, threats, problems, etc.
• a person whose job or duty is to watch and protect someone or something
• a group of people (such as soldiers) who protect a person or place

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² guard verb

• to watch (someone) in order to prevent escape
• to protect (someone or something) from danger or attack
• to be careful about not telling or talking about (something, such as a secret)