plebeian(noun, adjective) adjective1. of or associated with the great masses of people- his square plebeian noseSimilar word(s): lowborn, common, unwashed, vulgarSentences with plebeian as an adjective:- plebeian sports- They were all from the ghetto, a plebeian throng. noun1. one of the common peopleSimilar word(s): plebDefinition categories: person, commoner