1. （尤指历史上早期的）平民，庶民
A person, especially one from an earlier period of history, who is plebeian, comes from a low social class.

2. 平庸的；市井的；粗俗的
If someone describes something as plebeian, they think that it is unsophisticated and connected with or typical of people from a low social class.

1. one of the common people

Synonym: pleb