umbrella

Cloth-covered frame used for protection against rain or sun.

“Quick, grab that umbrella before you get rained on!”

Generally, anything that provides protection.

“The fighters provide a defensive air umbrella over the battle group.”

Something that covers a wide range of concepts, purposes, groups, etc.

“The test facility was established under the umbrella of the company's quality program.”

The main body of a jellyfish, excluding the tentacles.

“Jellyfish are composed of more than 90% water and most of their umbrella mass is made up of gelatinous material.”

An umbrella-shaped reflector with a white or silvery inner surface, used to diffuse a nearby light.

To cover or protect, as if by an umbrella.

To form the dome shape of an open umbrella.

To move like a jellyfish.