Other forms: lampshades
A lampshade is a decorative cover that diffuses a lightbulb's brightness. Besides looking pretty, lampshades also prevent a light's glare from temporarily blinding you.
If the naked bulb on your lamp casts a stark and blinding light, try putting a lampshade on top. This device does just what its name implies, shading the lamp's light in a pleasant way. Lampshades can be made of fabric, plastic, glass, or paper, and they come in an enormous variety of shapes, sizes, and colors. Early 20th-century vaudeville performers created the enduring trope of a man with a lampshade on his head as the wacky life of the party.