luxury

noun

1. (countable, uncountable)Very wealthy and comfortable surroundings; the state of being that they create.

   “Near-synonyms: splendor, grandeur, grandness, decadence”

2. (countable, uncountable)Something desirable but expensive and that one can live without.

   ““[…] We are engaged in a great work, a treatise on our river fortifications, perhaps? But since when did army officers afford the luxury of amanuenses in this simple republic? […]””

   “And with Millennial and Gen Z consumers accounting for a growing proportion of spending, the luxury market is increasingly sensitive to the social and environmental causes they identify with. […] With all this in mind, here are CNN Style’s best small luxuries for the conscientious gift giver: […]”

3. (countable, uncountable)Something that is pleasant and desirable but not necessary in life (whether expensive or not).

   “Sir Humphrey Appleby: Bernard, what do you want? / Bernard Woolley: I want to have a clear conscience. / […] / Sir Humphrey Appleby: When did you acquire this taste for luxuries (laugh track)?”

   “As the 1857 to Manchester Piccadilly rolls in, I scan the windows and realise there are plenty of spare seats, so I hop aboard. The train is a '221'+'220' combo to allow for social distancing - a luxury on an XC train as normally you're playing sardines, so I make the most of it.”

4. (countable, obsolete, uncountable)Lustfulness; sexual desire or attraction.

   “Fie on sinnefull phantasie: Fie on Lust, and Luxurie:”

5. (countable, obsolete, uncountable)Copulation; the act or action of sex.

   “Let not the Royall Bed of Denmark be / A Couch for Luxury and damned Incest.”

adj

1. Very expensive.
2. Not essential but desirable and enjoyable and indulgent.
3. Pertaining to the top-end market segment for mass production mass market vehicles, above the premium market segment.