This is the 3554th most frequent French word.
haut
"High" or "top."
Here, 'haut' is a noun referring to the uppermost part of an object or entity.
Le haut de la montagne est recouvert de neige.
The top of the mountain is covered with snow.
Here, 'haut' is used as an adverb indicating a high position or elevation.
Il habite au dernier étage, tout en haut.
He lives on the top floor, at the very top.
In this case, 'haut' is an adjective describing a hierarchical position of significance.