Definitions of popular:

• adjective:   regarded with great favor, approval, or affection especially by the general public

  Example: "A popular tourist attraction"

• adjective:   (of music or art) new and of general appeal (especially among young people)
• adjective:   carried on by or for the people (or citizens) at large

  Example: "The popular vote"

• adjective:   representing or appealing to or adapted for the benefit of the people at large

  Example: "A democratic or popular movement"

• adjective:   comprehensible to the general public

  Example: "Written for the popular press in plain nontechnical language"