noun
definition
Cloth-covered frame used for protection against rain or sun.
example
Quick, grab that umbrella before you get rained on!
definition
Generally, anything that provides protection.
example
The fighters provide a defensive air umbrella over the battle group.
definition
Something that covers a wide range of concepts, purposes, groups, etc.
example
The test facility was established under the umbrella of the company's quality program.
definition
The main body of a jellyfish, excluding the tentacles.
example
Jellyfish are composed of more than 90% water and most of their umbrella mass is made up of gelatinous material.
definition
An umbrella-shaped reflector with a white or silvery inner surface, used to diffuse a nearby light.