Vegas casino with a musical name (4)

I believe the answer is:

aria

'vegas casino with a musical name' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for aria that I've seen before include "Musical performance" , "Song for solo voice from an oratorio, cantata etc" , "Type of song" , "Operatic number" , "Operatic song" .)

I've seen this clue in The New York Times and the LA Times.

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