nChambranle(Arch) An ornamental bordering or framelike decoration around the sides and top of a door, window, or fireplace. The top piece is called the traverse and the side pieces the ascendants.
Century Dictionary and Cyclopedia
nchambranleIn architecture, a structural feature, often ornamental, inclosing the sides and top of a doorway, window, fireplace, or similar opening. The top piece or beam is called the traverse, and the two side pieces or posts are called the ascendants.