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.
1471, "a wall," from M.Fr. muraille, from L. muralia, neut. pl. of muralis "of a wall," from murus "wall" (Old L. moiros, moerus). Mural painting attested from 1850; mural as short for this is from 1921.