Read the dictionary definition of umbrella. All definitions for this word.
1. having the function of uniting a group of similar things
1. the Democratic Party is an umbrella for many liberal groups
2. under the umbrella of capitalism
2. a formation of military planes maintained over ground operations or targets
1. an air umbrella over England
3. a lightweight handheld collapsible canopy
4. covering or applying simultaneously to a number of similar items or elements or groups
1. an umbrella organization
2. umbrella insurance coverage