What is the meaning of Commonplace?

Ordinary; not having any remarkable characteristics.

A platitude or cliché.

Something that is ordinary; something commonly done or occurring.

A memorandum; something to be frequently consulted or referred to.

A commonplace book.

To make a commonplace book.

To enter in a commonplace book, or to reduce to general heads.

To utter commonplaces; to indulge in platitudes.

Source: wiktionary.org