umbrellas

'umbrellas'

[umbrella.n.01] as in: a lightweight handheld collapsible canopy

'umbrellas'

[umbrella.n.02] as in: a formation of military planes maintained over ground operations or targets

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Examples:
an air umbrella over England

'umbrellas'

[umbrella.n.03] as in: having the function of uniting a group of similar things

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Examples:
the Democratic Party is an umbrella for many liberal groups
under the umbrella of capitalism