atop /əˈtɒp/preposition 2adverb 1 preposition2 •On the top of.He sat atop the mountain, waiting for the end of the world. •(old-fashioned) On the top (with of).He sat atop of the mountain, waiting for the end of the world. adverb1 •(literary) On, to, or at the top.The envoy found the French king playing the part of horse while his young son rode atop. — 1978
