(software engineering) A type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, and the relationships between the classes.

A high-quality class of travelling (especially in airlines), higher than economy class or budget, lower than first class.

(computing) A security breach that is the first of its kind, and leads to others of the same class

plural of class break

plural of class clown

(social sciences) A class of people, based on social power, wealth or another criterion.

(art) A teaching session in which art students practice drawing or painting the human figure using a live (often naked) model

Conflict between social or economic classes (especially between the capitalist and proletariat classes); the active expression of a theoretical class conflict looked at from any kind of socialist perspective.

plural of class act

Of the highest quality.