a large picture painted or affixed directly on a wall or ceiling.

a greatly enlarged photograph attached directly to a wall.

a wallpaper pattern representing a landscape or the like, often with very widely spaced repeats so as to produce the effect of a mural painting on a wall of average size; a trompe l'oeil.

of, pertaining to, or resembling a wall.

executed on or affixed to a wall

mural inscriptions.

pertaining to any of several astronomical instruments that were affixed to a wall aligned on the plane of a meridian, and were formerly used to measure the altitude of celestial bodies

a mural quadrant; a mural circle.