The term "What" is often used to inquire about information or to seek clarification. It helps us understand the nature of something, whether it's a concept, an object, or an event. For example, when someone asks, "What is a dog?" they are looking for a definition or description of this beloved pet. In everyday conversations, "What" can also express surprise or disbelief. For instance, if someone hears unexpected news, they might respond with, "What?!" This usage highlights the importance of context in communication, as the meaning can shift based on the situation and tone.