[ plɪ'bi:ən ]
■ noun
1》 (in ancient Rome) a commoner.
2》 a member of the lower social classes.
■ adjective
1》 relating to the ~s of ancient Rome.
2》 lower-class or lacking in refinement.
Origin
C16: from L. plebeius (from plebs , pleb- 'the common people') + -an .