Definitions for "Petit four"
Keywords:  cake, biscuit, frosted, buffet, fancy
small (individual) frosted and ornamented cake
a small fancy cake, biscuit, or sweet-such as a piece of marzipan or a crystallized or chocolate covered fruit--typically severed nowadays with coffee at the end of a meal
Small bite-size cakes, petits fours are usually square or diamond-shaped. They're typically coated with icing and decorated.