An asterisk is a small star-shaped symbol (*) used in writing to mark something important or direct readers to extra information. When you see an asterisk next to a word or number, it means you should look elsewhere on the page (usually at the bottom) for a note or explanation.

You'll find asterisks everywhere once you start noticing them. In books, an asterisk might point to a footnote that explains a difficult word or gives interesting background information. On advertisements, asterisks often lead to fine print with important details about offers or restrictions. In math, the asterisk symbol can mean multiplication: 5 * 3 equals 15.

People sometimes use the phrase an asterisk next to someone's name to suggest their achievement deserves a note of caution or doubt.

When typing, you make an asterisk by pressing Shift and the 8 key. It's one of those small but mighty symbols that helps organize information and guide readers to what they need to know.