any of a series of rods placed in the angles between the steps of a carpeted staircase, used to hold the carpet in position
stair rod in American English
noun
a rod for holding a stair carpet in place against the bottom of a riser
Word origin
[1855–60]This word is first recorded in the period 1855–60. Other words that entered Englishat around the same time include: barrage, boilerplate, keyword, lavabo, specialist