Meaning of “middle class” - Learner’s Dictionary

middle class

noun [ group ] uk us

a social group that consists of well-educated people, such as doctors, lawyers, and teachers, who have good jobs and are neither very rich nor very poor

middle-class uk us /ˌmɪdlˈklɑːs/ adjective

belonging or relating to the middle class:

a middle-class suburb

(Definition of “middle class” from the Cambridge Learner’s Dictionary © Cambridge University Press)