Definition of “umbrella” - English Dictionary

“umbrella” in British English

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umbrellanoun [ C ]

uk /ʌmˈbrel.ə/ us /ʌmˈbrel.ə/

umbrella noun [ C ] (DEVICE)

A2 a device for protection against the rain, consisting of a stick with a folding frame covered in material at one end and usually a handle at the other, or a similar, often larger, device used for protection against the sun:

I felt a few drops of rain, so I put my umbrella up.
I left my umbrella on the bus yesterday.
a folding umbrella

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(Definition of “umbrella” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“umbrella” in American English

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umbrellanoun [ C ]

us /ʌmˈbrel·ə/

a cover that protects from rain or sun, esp. waterproof material fitted on a folding frame with a handle at one end:

A figure carrying an open umbrella walked slowly through the rain.

An umbrella is also something that includes a number of similar things:

an umbrella term
an umbrella organization

(Definition of “umbrella” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“umbrella” in Business English

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umbrellanoun [ C, usually singular ]

uk /ʌmˈbrelə/ us

something that includes or represents a group or range of similar things:

They provide an umbrella of work force development services.
An awful lot of damage is done under the umbrella of ecotourism.

(Definition of “umbrella” from the Cambridge Business English Dictionary © Cambridge University Press)