gateau definition by American Heritage Dictionary
or ga·teaunoun pl. gateaux gâteaux or ga·teaux
Origin: French, from Old French gastel, cake, from Frankish *wastil, food.
Variant of gâteau
- a rich layer cake or a pastry shell filled as with custard or mousse
- a meat, fish, or vegetable preparation shaped like a cake
Origin: French cake ; from Old French gastel ; from Frankish an unverified form wastil