IPA: /ˈbænɪstər/
KK: /ˈbænɪstər/
A handrail that is usually found alongside a staircase, providing support and safety for people as they go up or down.
She held onto the banister as she carefully walked down the stairs.
Banister comes from the Middle English word 'banistere', which is derived from the Old French 'bannister', meaning a railing or balustrade. The term is related to 'baluster', which refers to a small column or post that supports a railing. Thus, a banister is a railing supported by balusters.
Think of a 'railing' that supports you as you go up or down stairs — that's what a banister is, a supportive structure.