Luxury couple enrolled? (8)

I believe the answer is:

opulence

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'luxury' is the definition.
(I know that luxury can be written as opulence)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for opulence that I've seen before include "Ostentatious wealth" , "Means" , "Ostentatious luxury" , "Rich quality" , "State of wealth or abundance" .)

I've seen this clue in the Sydney Morning Herald.

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