I need a new dictionary

What does the word "stop" mean? The past week I have seen at least 10 drivers drive up to a stop sign and keep right on going. Some of them don't even slow down. I've heard of the "rolling stop" where the driver slows down to a crawl and doesn't come to a complete stop, but this is just dangerous. I only pray no one I love or know is the recipient of one of these non-stop violations.