Definitions of familiar:

• noun:   a spirit (usually in animal form) that acts as an assistant to a witch or wizard
• noun:   a person attached to the household of a high official (as a pope or bishop) who renders service in return for support
• noun:   a person who is frequently in the company of another
• adjective:   having mutual interests or affections; of established friendship

  Example: "On familiar terms"

• adjective:   well known or easily recognized

  Example: "A familiar figure"

• adjective:   within normal everyday experience; common and ordinary; not strange

  Example: "Familiar ordinary objects found in every home"