Look both.
Meaning: This means to tell someone to check both sides before crossing a street or moving forward. It's like saying, Check for cars before you cross the road.
Choice of Words: Look is a verb that means to turn your eyes towards something in order to see it. Both is an adjective that means two things or sides. When you put them together, "Look both" is a command to look to the left and right before crossing a road or moving forward.
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Related Expressions