American English

Definition of atop preposition from the Oxford Advanced American Dictionary

 

atop

 preposition
preposition
NAmE//əˈtɑp//
 
 
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on top of; at the top of a flag high atop a pole a scoop of ice cream atop a slice of apple pie The children piled atop one another in the sand. Fruit and vegetable prices rose 1.3 percent atop a 2 percent gain last month. Coca-Cola is atop the list of best-selling soft drinks.
See the Oxford Advanced Learner's Dictionary entry: atop