Origin: French suffix -eau
Chateau has 2 different meanings across 1 category:
an impressive country house (or castle) in France
"We spent a weekend visiting a grand chateau nestled in the vineyards of Bordeaux."
Alternative spelling of château
"The old chateau in France was originally a simple hunting lodge before it became a grand estate."
In plain English: A chateau is a large, fancy house that usually belongs to someone wealthy and often has beautiful gardens around it.
"The couple spent their honeymoon at a beautiful chateau in France."