pane / pān/ • n. a single sheet of glass in a window or door. ∎  Comput. a separate defined area within a window for the display of, or interaction with, a part of that window's application or output. ∎  a sheet or page of postage stamps.ORIGIN: late Middle English (originally denoting a section or piece of something, such as a fence or strip of cloth): from Old French pan, from Latin pannus ‘piece of cloth.’

pane.
1. Light in a window, or a piece of glass in a frame forming part of a light.

2. Side of any large object, such as one face of a spire or tower.

3. Space between the structural members of a timber frame.

4. Pierced walls of a cloister facing the garth.

pane
A. †piece of cloth XIII (survives in COUNTERPANE);

B. section or side (now only in some techn. uses) XIV;

C. division of a window XV; panel XVI. ME. pan, later pane — (O)F. pan :— L. pannus cloth, piece of cloth.