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.

noun

brolly , guard , parasol , protect , screen , shade , shelter , sunshade