An umbrella is an object which you use to protect yourself from the rain or hot sun. It consists of a long stick with a folding frame covered in cloth.
例句
Harry held an umbrella over Dawn.哈里為唐打著傘。
N-SING
綜合團體；總稱；統稱
Umbrella is used to refer to a single group or description that includes a lot of different organizations or ideas.
例句
Does coincidence come under the umbrella of the paranormal?...巧合屬于超自然現象嗎？Within the umbrella term 'dementia' there are many different kinds of disease.“癡呆”這一統稱里包括多種不同的疾病。
N-SING
保護傘（指保護某個國家或群體的體制或協議）
Umbrella is used to refer to a system or agreement which protects a country or group of people.
例句
The major powers have chosen to act under the moral umbrella of the United Nations...世界主要大國都選擇在聯合國的道義框架下行事。Britain cannot avoid being under the US nuclear umbrella, whether it wants to or not.不管愿不愿意，英國都免不了要處于美國的核保護傘之下。
英漢詞典釋義
n.
(雨)傘; 陽傘
Umbrella and raincoats are what people need in rainy days.傘和雨衣都是下雨天人們要用的。
起保護作用的力量[勢力]; 保護國（或體系）; 保護傘; 庇護
They operated under the umbrella of the police.他們在警方的掩護下采取了行動。
英英詞典釋義
Noun
1. a lightweight handheld collapsible canopy
2. a formation of military planes maintained over ground operations or targets;
"an air umbrella over England"
3. 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"
Adjective
1. covering or applying simultaneously to a number of similar items or elements or groups;