Pronunciation: (wûrld'klas', -kläs'), [key]
1. ranking among the world's best; outstanding: a world-class orchestra.
2. attracting or comprising world-class players, performers, etc.: a world-class tennis tournament.
3. Informal.being a notorious example of its kind: a world-class slob. Also,world'class'.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.