1 [noncount] : a condition or situation of great comfort, ease, and wealth
living in luxury
a symbol of luxury
the height of luxury
— often used before another noun
a luxury apartment
2 a [count] : something that is expensive and not necessary
He spent a fortune on expensive wines and other luxuries.
Right now a new car is a luxury that I can't afford.
2 b [singular] : something that is helpful or welcome and that is not usually or always available
We were lucky to have the luxury of choosing from among several good options.
We can't afford the luxury of waiting any longer.