[ dŭb′ē ]
A pointer star in the constellation Ursa Major and the brightest of the seven stars that form the Big Dipper, with apparent magnitude 1.8. Dubhe and Merak form the outer side of the Dipper's bowl, with Dubhe being the upper of the two stars. A straight line extending northward from these pointer stars leads to the North Star, Polaris.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Examples from the Web for dubhe
As I came near to Dubhe, I scanned the surrounding skies and was surprised to find that the whole semblance of my dipper was lost.
I paused not at Dubhe, but sped onward to one of the busy worlds that revolve around it, which I shall call Plasden.