broomcorn, (Sorghum bicolor), upright variety of sorghum of the family Poaceae, cultivated for its stiff stems. The seeds of broomcorn are borne on the ends of long straight branches. When harvested and dried, these stiff bristles are processed and bound to form broom heads and brushes and are also used for wreaths and other decorations. See also sorghum
Broomcorn is also the common name of Panicum miliaceum, a type of millet.