D defs.my
Entry 2 senses Webster, 1913

Mural

/myo͝or'-əl/ · Mu·ral · IPA /ˈmjʊɹəl/
01 a. Of or pertaining to a wall; being on, or in, a wall; growing on, or against, a wall; as, a mural quadrant.
  1. 1.
    Of or pertaining to a wall; being on, or in, a wall; growing on, or against, a wall; as, a mural quadrant.
  2. 2.
    Resembling a wall; perpendicular or steep; as, a mural precipice.
Phrases & compounds
Mural circle — a graduated circle, in the plane of the meridian, attached permanently to a perpendicular wall; -- used for measuring arcs of the meridian. See Circle, n., 3.
Mural crown — a golden crown, or circle of gold indented so as to resemble a battlement, bestowed on him who first mounted the wall of a besieged place, and there lodged a standard.