Fresco

Part of speech: noun (n.)

1. A cool, refreshing state of the air; duskiness; coolness; shade. [R.] Prior.

2. The art of painting on freshly spread plaster, before it dries.

3. In modern parlance, incorrectly applied to painting on plaster in any manner.

4. A painting on plaster in either of senses a and b.

Part of speech: verb (v.)

To paint in fresco, as walls.