From Longman Dictionary of Contemporary Englishon top of somethingon top of somethinga) on the highest surface of something There should be an envelope on top of the fridge. b) in complete control of a situation Don’t worry; I’m back on top of things now. I should be more on top of my work next week. c) if something bad happens to you on top of something else, it happens when you have other problems On top of everything else, I now have to go to work next Saturday! → top
Examples from the Corpus
on top of something• The weight of the air on top of the paper held it down with so much pressure that the stick broke.• The charge came on top of $ 200 million the firm already set aside in July.• They laid the mattress over her, then piled pillows and coats on top of that.• Then spread the cream cheese-nut filling on top of the honey-butter.• Allen slipped and fell and was stabbed three times in his left shoulder and once on top of his head.• Then they were lying against each other, on top of each other, inside each other.• Human beings are the same: they're piled on top of one another.• Dry-fry the bacon, onion and mushrooms, then place on top of the cauliflower. 