1.Definition: having or showing or indicative of high or elevated character
"A noble spirit", "Noble deeds"
2.Definition: impressive in appearance
"A noble tree", "Severe-looking policemen sat astride noble horses"
3.Definition: inert especially toward oxygen
"A noble gas such as helium or neon", "Noble metals include gold and silver and platinum"
4.Definition: of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times
"Of noble birth"