atop
/əˈtɑp/
preposition
- On top of; at the highest point of something.
- The cat sat atop the bookshelf, watching everyone below.
- A flag waved proudly atop the mountain peak.
- She placed a cherry atop the ice cream sundae.
adverb
- On or at the top.
- The castle stood atop, overlooking the valley.
- The final layer of frosting was spread atop.
- He climbed the ladder and perched atop.