a group of seven bright stars in the constellation Ursa Major
elevated railway in an amusement park (usually with sharp curves and steep inclines)
A rollercoaster.
A bright circumpolar asterism of the northern sky, said to resemble a ladle or cart. It is part of the constellation Ursa Major and includes the stars Mizar, Dubhe, and Alkaid. The other stars in it are Alioth, Megrez, Merak, and Phecda.