panel

noun

1. A (usually) rectangular section of a surface, or of a covering or of a wall, fence etc.
2. A sunken compartment with raised margins, moulded or otherwise, as in ceilings, wainscotings, etc.
3. A group of people gathered to judge, interview, discuss etc. as on a television or radio broadcast for example.
4. A portion of text or other material within a book, newspaper, web page, etc. set apart from the main body or separated by a border.
5. An individual frame or drawing in a comic.
6. A type of GUI widget, such as a control panel.
7. A document containing the names of persons summoned as jurors by the sheriff.
8. The whole jury.
9. A prisoner arraigned for trial at the bar of a criminal court.
10. A piece of cloth serving as a saddle.
11. A soft pad beneath a saddletree to prevent chafing.
12. A board having its edges inserted in the groove of a surrounding frame.
13. One of the faces of a hewn stone.
14. A slab or plank of wood used instead of a canvas for painting on.
15. A heap of dressed ore.
16. One of the districts divided by pillars of extra size, into which a mine is laid off in one system of extracting coal.
17. A plain strip or band, as of velvet or plush, placed at intervals lengthwise on the skirt of a dress, for ornament.
18. A portion of a framed structure between adjacent posts or struts, as in a bridge truss.
19. A list of doctors who could provide limited free healthcare prior to the introduction of the NHS.
20. A group of tests or assays, a battery.