Cupcake is an American English compound (early 19th century) of 'cup' + 'cake', so named either for being baked in cups or measured by the cupful. The immediate etymological form is Old English cuppe. In present use as a noun, it means "a small cake baked in a cup-shaped container", keeping the historical formation close to the word's ordinary semantic work. As a compound, its meaning is assembled from the two visible parts rather than from an opaque borrowing. Related words include cup and cake. The surrounding word family keeps the same base visible in cup and cake, showing how the headword belongs to a larger cluster rather than standing alone.