Idiom
The thief took to his heels when he saw a policeman on the beat.

confronted the policeman
could not decide what to do
had some pain in his heels
ran away from the scene

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Idiom
To disabuse one's mind

To conceal something
To banish from one's mind a thought
To proceed cautiously so as to avoid risks and dangers
To remove a misapprehension

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