Definition of umbrella :
1. A shade, screen, or guard, carried in the hand for sheltering the person from the rays of the sun, or from rain or snow. It is formed of silk, cotton, or other fabric, extended on strips of whalebone, steel, or other elastic material, inserted, or fastened to, a rod or stick by means of pivots or hinges, in such a way as to allow of being opened and closed with ease. See Parasol.
2. Any marine tectibranchiate gastropod of the genus Umbrella, having an umbrella- shaped shell; - called also umbrella shell.
3. The umbrellalike disk, or swimming bell, of a jellyfish.
bumbershoot, beach umbrella, comprehensive
shade (part of speech: noun)
- Why, Emil, you haven't brought your umbrella with you! - "Bertha Garlan", Arthur Schnitzler.
- Their umbrella was the hemlock and their mother's body was the stove. - "Dusty Star", Olaf Baker.
- He went out into the pouring rain, keeping a sharp lookout from under the edge of the umbrella he held low over his head. - "The Heart of Rome", Francis Marion Crawford.