senna: any of various plants of the genus Senna having pinnately compound leaves and showy usually yellow flowers; many are used medicinally
object: a tangible and visible entity; an entity that can cast a shadow
iraqi national congress: a heterogeneous collection of groups united in their opposition to Saddam Hussein's government of Iraq; formed in 1992 it is comprised of Sunni and Shiite Arabs and Kurds who hope to build a new government