verb

1. SHARPEN, put (an image) into focus
2. SHARPEN, become sharp or sharper
3. SHARPEN, make crisp or more crisp and precise
4. SHARPEN, make (one's senses) more acute
5. SHARPEN, give a point to
6. SHARPEN, raise the pitch of (musical notes)
7. SHARPEN, make sharp or sharper
8. SHARPEN, make (images or sounds) sharp or sharper
9. SHARPEN, to make (something) sharp or sharper
10. SHARPEN, to make (something) clearer or more distinct
11. SHARPEN, to become clearer or more distinct

1. Can you sharpen the image?
2. The lecture sharpened my understanding of the topic.
3. The outlines of the mountains sharpened as we got closer.