Webster's Revised Unabridged Dictionary · 1913

Illustrious

Illustrious , adjective

[Latin illustris, prob. for illuxtris; from il- in + the root of lucidus bright: compare French illustre. See Lucid.]

1.
Possessing luster or brightness; brilliant; luminous; splendid.
Quench the light; thine eyes are guides illustrious. — Beau. & Fl
2.
Characterized by greatness, nobleness, etc.; eminent; conspicuous; distinguished.
Illustrious earls, renowened everywhere. — Drayton
3.
Conferring luster or honor; renowned; as, illustrious deeds or titles.