Buttercream

Buttercream (also known as butter cream, butter icing, and mock cream) is a type of icing or filling used inside cakes, as a coating, and as decoration. In its simplest form, it is made by creaming butter with powdered sugar, although other fats can be used, such as margarine or lard. Colorings and flavorings are often added, such as chocolate, fr...
Found on http://en.wikipedia.org/wiki/Buttercream

Buttercream

A flavored mixture of butter, sugar and eggs used to fill and frost cakes. Whole eggs, yolks or whites may be heated with sugar in a double-boiler and whipped cold (or alternatively, sugar syrup cooked to the firm-ball stage can be poured over the eggs), before adding the butter and flavoring. Also made by combining butter with pastry cream in a on...
Found on http://www.chowbaby.com/10_2000/glossary/glossary.html?synchpage=5&Z=750170

Buttercream

A frosting made from sugar, sweet butter, milk, egg yolks and flavoring. Confectioner's or powdered sugar is often used buy not required.
Found on http://www.encyclo.co.uk/local/21216

Buttercream

A mixture of butter, sugar, and eggs or custard; it is used to garnish cakes and pastries.
Found on http://www.encyclo.co.uk/local/22282
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