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umbrella
noun
- a screen or shade, usually of cloth stretched over a folding radial frame, carried for protection against the rain or sun
- something suggestive of this; specif.,
- the body of a jellyfish
- any comprehensive, protective organization, alliance, strategy, or device: the umbrella of insurance
- a force of military aircraft sent up to screen ground or naval forces: air umbrella
See umbrella in American Heritage Dictionary 4
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