The term 'Wedding Dessert Layer' can be solved by the crossword solution 'TIER', which is a four-letter word. A TIER is a layer of a cake, usually referring to a multi-layered wedding cake. It is often used to refer to the different levels of a wedding cake, with each layer having a different flavor or design. The tiers of a wedding cake are often decorated with flowers, ribbons, and other decorations to make it look more attractive.