Uranium which has had its uranium-235 taken out of it is called depleted uranium. It is used in anti-tank weapons. Uranium can also be used as a dye for stained glass or pottery, which is how it was used before people found out that it was radioactive.
Uranium is a dangerous substance. Because Uranium is radioactive it is often seen with the hazard sign for radioactive elements, a group of three triangles with curved outer edges pointing in towards the middle (as you can see on the left). Some people believe that Uranium is light green, and glows, due to the way it is depicted in many movies. However, this is not true. Uranium is a shiny white metal, but is usually seen in its oxide form which is black. In addition to being radioactive, uranium is a heavy metal and is chemically toxic.
↑Morss, L.R.; Edelstein, N.M. and Fuger, J., ed. (2006). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Netherlands: Springer. ISBN9048131464.CS1 maint: Multiple names: editors list (link)