Umbrellas meaning : Cloth-covered frame used for protection against rain or sun. Generally, anything that provides protection. Something that covers a wide range of concepts, purposes, groups, etc. The main body of a jellyfish, excluding the tentacles. 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.