Tipi, also spelled tepee, was the type of tent most commonly used by the Plains tribes of Native Americans in North America. A tipi was made by stretching a buffalo-skin covering over poles. The poles were arranged in the shape of a cone. At the top, the ends of the poles crossed and stuck out of the covering. Two flap “ears” were opened at the top to let out smoke from the campfire. The tent was pegged to the ground all around the bottom. The front had a slit partly closed with wooden pins to form an entrance.