Bezier Tool

I was a little confused about bezier. When I used Photoshop or CorelDraw, I was wondering what bezier means in English.

When I was a kid and I learned English; pen is a pen, pencil is a pencil, ballpoint is a ballpoint. They mostly have the same function: to write!

But when I used CorelDraw, I kept asking myself what bezier actually meant in English.
For you who also want to know about it:

The Pen Tool has actually been called several things over the years, and by that, I don't mean the sort of things you may have called it in moments of frustration. You may have heard it referred to as the Bezier Pen or the Bezier Tool, and that's because it was created by a man named Pierre Bezier, a French engineer and all-around smart guy who came up with the fancy math that powers the tool while working for the Renault car company (the Pen Tool was originally created to help design cars).
No wonder I didn't get it :)