Definitions for génoiseʒeɪnˈwɑz
Random House Webster's College Dictionary
a light yellow cake made with eggs and butter and typically layered, filled, and frosted or made into petits fours for serving.
Origin of génoise:
1930–35; < F; fem. of génois of Genoa
rich and delicate Italian sponge cake
classic European sponge cake named after the city of Genoa