stairhead
/ˈsteɪɹhɛd/Definitions
1. noun
The top or head of a flight of stairs, especially the landing at the top.
“She stood at the stairhead, catching her breath before heading out.”
2. noun
The beginning or head of a flight of stairs, often leading to a room or a hall.
“The stairhead of the mansion was grand, with an impressive chandelier hanging above.”