bannister
UK[ˈbænɪstə]US[ˈbænɪstər]
n
A rail fixed on posts along the side of a staircase.
n
The posts and rail of a staircase considered together.
Etymology
The word 'bannister' presents a fascinating case of linguistic transformation through folk etymology. Its origin lies in the architectural term 'baluster', referring to the short, often bulbous pillar supporting a stair rail. 'Baluster' itself derives from the Greek 'balaustion', the flower of the wild pomegranate, whose shape the classical baluster was thought to resemble. Over time in English, the unfamiliar 'baluster' was altered to the more familiar-sounding 'bannister', possibly influenced by the common name 'Bannister'. Thus, the modern term for a stair rail has traveled from a Greek botanical reference, through Italian and French architectural language, to an English form shaped by auditory association.
Analysis
The word 'bannister' is a simplex word derived from a single, altered root. It is a corruption of the earlier English word 'baluster', which entered English from the French 'balustre', itself from Italian 'balaustro', meaning a wild pomegranate flower. The Italian term likely came from Latin 'balaustium', borrowed from Greek 'balaustion'. The functional role of the word is as a noun.
Examples
She held onto the wooden bannister as she descended the steep stairs.
The children loved sliding down the smooth, polished bannister.
The old house's staircase had an ornate, wrought-iron bannister.