Origin: Latin suffix -al
Mural has 5 different meanings across 2 categories:
a painting that is applied to a wall surface
"The children spent hours helping their teacher paint a colorful mural on the school's exterior brick wall."
A large painting, usually drawn on a wall.
"The children spent all afternoon admiring the vibrant mural painted directly onto the side of the school building."
To create a mural.
"The local artist spent three weekends painting a vibrant mural on the side of the community center."
Of or relating to a wall; on, or in, or against a wall.
"The artist spent weeks painting a vibrant mural that covered the entire side of the brick building."