noun
Usage: usually capitalized B&M
1. : any of three stages of an ancient culture of the plateau area of southwestern United States that preceded and formed one cultural development with the Pueblo, was characterized by excellent basketry and use of the spear thrower, and was marked by development from an initial nomadic preagricultural state through a cave-dwelling phase with limited agriculture to a village economy with semisubterranean houses, agriculture, the beginnings of pottery, and use of bow and arrow
2. : a member of the people who produced the Basket Maker culture