billboard

A billboard is a big sign that people can see from the road as they drive by. It's usually bright and eye-catching.

You might have seen billboards on your way to school or work, especially if you live near a highway. They're often used for advertising - companies put up billboards to promote their products or services. For example, a car dealership might put up a billboard that says "Get the best deal on our new SUVs!" or an airline might advertise its low fares with a colorful billboard. Sometimes, billboards can also be used for public service announcements or to give information about events happening in the area.