- Carved stones that have been found at ancient and more recent North American sites. They were apparently often part of an atlatl, or spear-thrower; it is believed that a bannerstone was tied to the center of thin, willowy atlatl shafts, thus increasing the spear-thrower's flexibility and causing an efficient, whip-like action. Bannerstones were often carefully carved of decorative stone, and were probably considered sumptuary implements and symbols of status. Some bannerstones seem to have been mounted on staffs or poles to serve primarily as symbols of rank.
- The middle point, especially of a line, circle or sphere, equidistant from the ends or from any point on the circumference or surface.
- Typically reserved to refer narrowly to the cultures of the native peoples of the United States and Canada, excluding the Eskimos and Aleuts. For the indigenous peoples of Canada use the term "First Nations." For the broader concept of the cultures of any native peoples of Central America, South America, North America, or the West Indies who are considered to belong to the Mongoloid division of the human species, use "Amerindian (culture)."
- Refers to the cultures of the continent of North America, which is bounded by the Atlantic Ocean, the Pacific Ocean, the Arctic Circle, and Central America. In classifications schemes based on physical geography, Central America, and North America are parts of the same continent.
- The compass point lying midway between north and east.
- A very fine-grained, foliated, non-layered metamorphic rock, generally produced by metamorphism of shale under relatively low pressure and temperature. It occurs in many varieties, including clay, hornblende, mica, talc slate, and others, all of which have the common property of splitting readily into thin plates.
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