|1.||[ noun ] a lightweight handheld collapsible canopy|
|Related terms:||canopy gamp handle rib gore|
|2.||[ noun ] (military) a formation of military planes maintained over ground operations or targets|
"an air umbrella over England"
|Related terms:||defense military|
|3.||[ adjective ] covering or applying simultaneously to a number of similar items or elements or groups|
"an umbrella organization" "umbrella insurance coverage"
|4.||[ noun ] having the function of uniting a group of similar things|
"the Democratic Party is an umbrella for many liberal groups" "under the umbrella of capitalism"