A passenger car of the early 20th century in blue and with a convertible topA passenger car of the early 20th century in blue and with a convertible top
Many colorful candies are lying on top of each otherMany colorful candies are lying on top of each other
A plane and there's another small plane on top of itA plane and there's another small plane on top of it
То же, что топнул. Первая часть сложных слов в знач. «высшего разряда, высший» ,.