stair rod
/ˈstɛr rɑd/
noun
- A long, thin rod used to hold a carpet in place at the edge of a stair step.
- One of the stair-rods came loose, so the carpet started to slip.
- She polished the stair-rods until they gleamed like gold.
- The old house had brass stair-rods on every step of the grand staircase.