wainscoting

US /ˈweɪn.skɑː.t̬ɪŋ/
UK /ˈweɪn.skɑː.t̬ɪŋ/
1.

ván ốp tường

an area of flat, rectangular pieces of wood or another material that are attached to the lower parts of the walls in a room, or the wood, etc. that is used in this way:

:
Varnished wainscoting covered the lower half of the dining and living room walls.