Umbrella (Shota Shimizu album) definition

(1) Covering or applying simultaneously to a number of similar items or elements or groups

"An umbrella organization"

"Umbrella insurance coverage"

(2) 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"

(3) A formation of military planes maintained over ground operations or targets

"An air umbrella over England"

(4) A lightweight handheld collapsible canopy