Definition of panels:
(n) :
A group of people gathered to judge, interview, discuss etc. as on a television or radio broadcast for example.
(n) :
A (usually) rectangular section of a surface, or of a covering or of a wall, fence etc.
(n) :
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.
(n) :
(graphical user interface) A type of GUI widget, such as a control panel.
(n) :
(comics) An individual frame or drawing in a comic.
(n) :
(law) A document containing the names of persons summoned as jurors by the sheriff.