A class refers to a group or category into which objects, people, or concepts can be classified. It is a fundamental concept in various disciplines. In education, a class typically refers to a group of students who attend a course or study together. In programming, a class is a blueprint for creating objects, defining their properties and behaviors. In social stratification, class refers to the hierarchical division of society based on social and economic criteria. Additionally, class can also signify elegance or stylishness. Overall, the word "class" encompasses a wide range of meanings, depending on the context in which it is used.