I believe the answer is:
'clubhouse?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
This is the entire clue.
Can you help me to learn more?
(Other definitions for villa that I've seen before include "where 6 [VERDI] lived?" , "Large country house" , "Country house (in Aston?)" , "Rented holiday home" , "Country house in Italy or France" .)