noun A flat or curved component, typically rectangular, that forms or is set into the surface of a door, wall, or ceiling. (a layer of insulating material should be placed between the panels and the wall) A flat board on which instruments or controls are fixed. (a control panel) A small group of people brought together to investigate or decide on a particular matter. (an interview panel) A person or people charged with an offence.
verb Cover (a wall or other surface) with panels. (an elegant panelled dining room)