D defs.my
Entry 1 sense Webster, 1913

gateau

/(gȧ*tō")/ · ga·teau · IPA /ɡɑtˈoʊ/
01 n. Any of various rich and elaborate cakes, particularly a light sponge cake having a rich filling or rich icing, such as gateau foret noire (…
  1. 1.
    Any of various rich and elaborate cakes, particularly a light sponge cake having a rich filling or rich icing, such as gateau foret noire (Black Forest Cake).(Cookery)