This is the 6613th most frequent Chinese word.
最上
"Most superior" or "topmost."
In this context, '最上' is used to describe 'most superior' or 'finest' quality.
这座建筑是全城中最上等的。
This building is the finest in the city.
Here, '最上' denotes the 'highest' or 'topmost' hierarchical level.
他是我们队伍里最上一层的负责人。
He is the top-level leader in our team.
In this example, '最上' refers to the 'supreme' or 'most excellent' quality of the view.