cha·teau also châ·teau 
(shă-tō)
(shă-tō)n. pl. cha·teaus or cha·teaux (-tōz)
1. A castle or manor house in a French-speaking region.
2. An estate where wine is produced and often bottled, especially in the Bordeaux region of France.
3. A large country house.
[French château, from Old French chastel, from Latin castellum, castle; see CASTLE.]