(n) an outstanding feature; something in which something or someone excels, Syn. excellency, Example:a center of manufacturing excellence; the use of herbs is one of the excellencies of French cuisine
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
His excellency is over Israel. Ps. lxviii. 34. [ 1913 Webster ]
Extinguish in men the sense of their own excellency. Hooker. [ 1913 Webster ]
2. A title of honor given to certain high dignitaries, esp. to viceroys, ministers, and ambassadors, to English colonial governors, etc. It was formerly sometimes given to kings and princes. [ 1913 Webster ]