noun A set or category of things having some property or attribute in common and differentiated from others by kind, type, or quality. (the accommodations were good for a hotel of this class) The system of ordering a society in which people are divided into sets based on perceived social or economic status. (people who are socially disenfranchised by class) A group of students who are taught together.
verb Assign or regard as belonging to a particular category. (conduct that is classed as criminal)
adjective Showing stylish excellence. (he's a class player)