Of or pertaining to the working class; suggestive of the working class in manner of speaking, outlook, appearance or other qualities.

Of a standard that ranks among the best in the world.

(taxonomy) A collection of organisms that is given formal recognition at the rank of class with a taxonomic name, but which is known to be an artificial group rather than a natural one.

(education) A class, typically in a performing art such as music or drama, in which a teacher listens to and critiques the performance of individual students, one at a time, while the other students look on.

Alternative spelling of second-class

The second-lowest rank in the Boy Scouts of America, between tenderfoot and first class.

Most inferior in quality or standing.

(neutral or mildly positive connotation) Of a standard or grade one level below the best. / (negative connotation) Inferior in quality or standing.

Alternative spelling of class-conscious

(of a person) Aware of the socioeconomic class of oneself and others. / (of a community) Stratified into such classes.