If you missed the big game, don't worry — you can still catch the highlights on the news. A highlight is the most important or memorable part of something.
If you don’t have time to listen to your friend’s long, involved story, you might say, "Just give me the highlights." Highlight can also mean "a lightness or a bright area." If someone puts highlights in their hair, they are adding bright streaks to their hair. When used as a verb, highlight means "to emphasize." You may want to highlight the best grades on a report card while downplaying the lesser ones.