working class

Short definition from Wiktionary

Noun

1. 1
   The social class of those who perform physical work for a living, as opposed to the professional or middle class, the upper class, or others.

Adjective

1. 1
   Alternative spelling of working-class.
2. 2
   Of or pertaining to the working class; suggestive of the working class in manner of speaking, outlook, appearance, or other qualities.