bottom
If you are referring to the title at the top of the window it is called a "Title Bar"
The horizontal parts of a window are the sill on the bottom, and the head on the top. On the sides, running vertically, are the jambs.
The top part of a wave is called the crest, while the bottom part is called the trough.
Itβs in the window at the very top. Not in the window frame, but part of the window. It has dots on it.
The top part of a tornado is called "the top"
The top part of a fraction is the numerator; the bottom part is the denominator.
Barn owl.
office button
The bottom part of your hand is the Palmar sideand the top part is the Dorsal side.
The top part of a shirt is called the collar. It is the part that goes around the neck area.
Denominator. The top part is called the numerator.