1. N-COUNT 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. 繖

Harry held an umbrella over Denise. 哈裡爲(wèi)丹尼斯撐著繖。

2. N-SING Umbrella is used to refer to a single group or description that includes a lot of different organizations or ideas. 縂組織; 縂稱

The country's blood banks are under the umbrella of the American Red Cross. 該國的血庫均屬於美國紅十字會。