 The verb "to sandwich" has the meaning "to position anything between two other things of a different character, or to place different elements alternately," and the noun "sandwich" has related meanings derived from this more general definition.For example, an ice cream sandwich consists of a layer of ice cream between two layers of cake or biscuit.Similarly, Oreos and Custard Creams are described as sandwich biscuits (UK/Commonwealth) or sandwich cookies (US) because they consist of a soft filling between the baked layers.