a piece of cloth decorated with the pattern and colours that represent a country or organization. A flag is often hung from a pole called a flagpole旗;旗帜;国旗
The British flag is called the Union Jack. 英国国旗被称为“联合王国国旗”。
There was a march with flags flying and drums beating. 行军队伍飘着旗帜,擂着战鼓。
the sign that represents Communism, consisting of a hammer across a sickle (=a tool used for cutting grain crops). This sign was used on the flag of the Soviet Union. 锤子和镰刀(共产主义的标志,曾用在前苏联的国旗上)