from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A multiple star in Centaurus whose three components represent the brightest object in the constellation, 4.4 light-years from Earth.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. The brightest star in the southern constellation of Centaurus. It is actually a binary star with Proxima Centauri as a third component.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. brightest star in Centaurus; second nearest star to the sun
From α (brightest) + Centauri ("of the constellation Centaurus") (Wiktionary)