noble in WordNet English dictionary

1. impressive in appearance
   "a baronial mansion"; "an imposing residence"; "a noble tree"; "severe-looking policemen sat astride noble horses"; "stately columns"
   baronial  imposing  noble  stately 
   
2. having or showing or indicative of high or elevated character
   "a noble spirit"; "noble deeds"
   noble 
   
3. of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times
   "of noble birth"
   noble 
   
4. inert especially toward oxygen
   "a noble gas such as helium or neon"; "noble metals include gold and silver and platinum"
   noble 
   

1. a titled peer of the realm
   Lord  noble  nobleman