I. ˈmyu̇r-əl adjective
Etymology: Latin muralis, from murus wall — more at munition
Date: 1586
1. : of, relating to, or resembling a wall
2. : applied to and made integral with a wall or ceiling surface
II. noun
Date: 1916
: a mural work of art (as a painting)
• mu·ral·ist -ə-list noun