The term 'Tearoom Biscuit' is a type of biscuit that is traditionally served in a tearoom. It is a small, round, flat biscuit that is usually made with butter and sugar. The crossword solution for this term is 'SCONE', which is a type of biscuit that is similar to the tearoom biscuit. Scones are usually made with flour, butter, sugar, and baking powder, and they are often served with jam or cream.