What is Block ?
Block is (noun) 1. a large building They live in a block of flats. 2. US a section of buildings surrounded by streets He lives two blocks away. 3. a large piece Blocks of ice were floating in the river. 4. a group of things together They booked a block of seats in the middle of the plane. ((verb)) to prevent something passing along something The pipe is blocked with dead leaves. The crash blocked the road for hours. What can I take for my blocked nose? Synonym obstruct
source: Easier English, Student Dictionary Upper Intermediate Level