Definitions
1.nounCloth-covered frame used for protection against rain or sun."Quick, grab that umbrella before you get rained on!"
2.nounGenerally, anything that provides protection."The fighters provide a defensive air umbrella over the battle group."
3.nounSomething that covers a wide range of concepts, purposes, groups, etc."The test facility was established under the umbrella of the company's quality program."
4.nounThe 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."
5.nounAn umbrella-shaped reflector with a white or silvery inner surface, used to diffuse a nearby light.
6.verbTo cover or protect, as if by an umbrella.
7.verbTo form the dome shape of an open umbrella.
8.verbTo move like a jellyfish.