A coffee table book is a big book that people can put on their table at home or at work. It's usually filled with pretty pictures and interesting information, like photos of animals or famous places. You can look through it when you're bored or when you have friends over to show them all the cool stuff inside. It's called a coffee table book because it's like something you might see at a coffee shop - people might look at it while they're waiting for their coffee or sitting down to hang out with friends.