Top Definition
1. Impressive stylishness in appearance or behavior.

2. High Class.

3. Rich in appearance or behavior.
The new CLA Benz is pretty chateau for just 30k.
by Kreziwill September 28, 2013
To change someone else's PC desktop settings while they are away, such as by changing the color scheme or background (often to the absurd "Chateau" bitmap that comes with Windows 2000 and later). Used in office environments as a mild prank and a friendly (or not-so-friendly) reminder to lock one's workstation when away.

Also extends to more malicious pranks, including sending emails posing as the victim, etc.
Look, Jeff left his computer unlocked again. Let's chateau him.
by Blandon February 24, 2006

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