- a light, small, portable, usually circular cover for protection from rain or sun, consisting of a fabric held on a collapsible frame of thin ribs radiating from the top of a carrying stick or handle.
- the saucer- or bowl-shaped, gelatinous body of a jellyfish; bell.
- something that covers or protects from above, as military aircraft safeguarding surface forces: an air umbrella.
- any general kind of protection: a price umbrella.
- something, as an organization or policy, that covers or encompasses a number of groups or elements.
- shaped like or intended to perform the function of an umbrella.
- having the quality or function of covering or applying simultaneously to a number of similar items, elements, or groups: an umbrella organization; umbrella coverage in an insurance policy.
- a portable device used for protection against rain, snow, etc, and consisting of a light canopy supported on a collapsible metal frame mounted on a central rod
- the flattened cone-shaped contractile body of a jellyfish or other medusa
- a protective shield or screen, esp of aircraft or gunfire
- anything that has the effect of a protective screen or cover
- any system or agency that provides centralized organization or general cover for a group of related companies, organizations, etc
- (as modifier)
