1. (

• umbrella

) a lightweight handheld collapsible canopy ;

2. (

• umbrella

) a formation of military planes maintained over ground operations or targets; "an air umbrella over England" ;

3. (

• umbrella ,

) 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" ;

1. (

• umbrella

) covering or applying simultaneously to a number of similar items or elements or groups; "an umbrella organization"; "umbrella insurance coverage" ;