Crossword Genius

Watchmaker acquiring new house (6)

Ross

I believe the answer is:

casino

I'm a little stuck... Click here to teach me more about this clue!

This might be a double definition.

'watchmaker acquiring' is the first definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'new house' is the second definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe you can see an association between them that I don't see?

Can you help me to learn more?

(Other definitions for casino that I've seen before include "Gambling venue" , "gambling joint" , "Where our betters show" , "Gaming-house" , "--- Royale (Fleming)" .)

I've seen this clue in The Independent.
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