What is the meaning of primitive?

noun

• A person who belongs to an early stage of civilization.
  • synonyms: primitive person
• A mathematical expression from which another expression is derived.
• A word serving as the basis for inflected or derived forms.
  • usage: "`pick' is the primitive from which `picket' is derived"

adjective

• Belonging to an early stage of technical development; characterized by simplicity and (often) crudeness.
  • usage: "the crude weapons and rude agricultural implements of early man"; "primitive movies of the 1890s"; "primitive living conditions in the Appalachian mountains"
  • synonyms: crude, rude
• Little evolved from or characteristic of an earlier ancestral type.
  • usage: "archaic forms of life"; "primitive mammals"; "the okapi is a short-necked primitive cousin of the giraffe"
  • synonyms: archaic
• Used of preliterate or tribal or nonindustrial societies.
  • usage: "primitive societies"
• Of or created by one without formal training; simple or naive in style.
  • usage: "primitive art such as that by Grandma Moses is often colorful and striking"
  • synonyms: naive