Crossword Genius

They say you are each in love with this museum (6)

Ross

I believe the answer is:

louvre

'this museum' is the definition.
(art museum in Paris)

I cannot understand how the rest of the clue works.

(Other definitions for louvre that I've seen before include "Famous Paris national gallery of art" , "Great art gallery in Paris" , "Type of windows and doors" , "European museum" , "Great art museum-gallery in Paris" .)

I've seen this clue in The Guardian.
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