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src: wikipedia
- Definition
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- sharpen :make sharp or sharper
- sharpen :make crisp or more crisp and precise
- We had to sharpen our arguments
- sharpen :become sharp or sharper
- sharpen :put (an image) into focus
- Please focus the image; we cannot enjoy the movie
- sharpen :give a point to
- sharpen :make (one's senses) more acute
- This drug will sharpen your vision
- sharpen :make (images or sounds) sharp or sharper
- sharpen :raise the pitch of (musical notes)