Bezel definition

From old dialect biseau ("sloping edge"), variation on bijou ("jewel"), itself probably from late Breton bisou, ("ring worn on the finger").

The sloping edge or face on a cutting tool
The oblique side or face of a cut gem; especially the upper faceted portion of a brilliant (diamond), which projects from its setting
The rim and flange which encompasses and fastens a jewel or other object, such as the crystal of a watch, in the cavity in which it is set.
The panel that covers the front of a computer case, or the panel covering each drive bay that can be removed to install a removable drive that requires external access, such as a CD/DVD-ROM drive, which usually has its own preinstalled bezel.