Definition of "Noble" :

noun: a titled peer of the realm

adjective: impressive in appearance

"A noble tree."

adjective: having or showing or indicative of high or elevated character

"A noble spirit."

adjective: of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times

"Of noble birth."

adjective: inert especially toward oxygen

"A noble gas such as helium or neon."