mac·a·ron 
(mä′kə-rôɴ, mă′kə-rôn)
(mä′kə-rôɴ, mă′kə-rôn)n.
A small round cookie composed of a soft filling, such as ganache or buttercream, sandwiched between two delicate shells made from egg whites, ground almonds, sugar, and often other flavorings.
[French; see MACAROON.]