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.

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

plural of class act

plural of class warrior

(aviation, travel) (in a reservation system) The letter used to signify a particular fare level.

(regular expressions) Characters which are excluded in a pattern.

(US, colloquial) An introductory university course that is designed to "weed out" those students who are not able to pass it.

(sociology) A participant in class warfare.

(martial arts) A division of competition used to match competitors against others of their own weight

(linguistics) A linguistic form class whose members are words.