CHAMFER, Champfer or Chaumfer (Fr. chanfrein; possibly from Lat. cantus, corner, and frangere, to break), an architectural term; when the edge or arris of any work is cut off at an angle of 45° in a small degree, it is said to be "chamfered," while it would be "canted" if on a large scale. The chamfer is much used in medieval work, and is sometimes plain, sometimes hollowed out and sometimes moulded. Chamfers are sometimes "stopped" by a bead or some moulding, but when cut short by a slope they are generally known as "stop chamfer."
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)