flag

1 noun (C)

1 a piece of cloth with a coloured pattern or picture on it that represents a country or organization: The children waved their flags as the Queen went by. | the flag of Texas | a flag flies (=a flag is shown on a pole): Flags were flying at half-mast for the death of the Premier.

2 a coloured piece of cloth used as a signal: The flag went down, and the race began.

3 under the flag of if a group of people do something under the flag of a particular country or organization, they do it as representatives of that country or organization

4 the flag an expression meaning a country or organization and its beliefs, values, and people: loyalty to the flag

5 keep the flag flying to achieve success on behalf of your country in a competition

6 a flagstone

—see also: fly the flag fly 1 (27) 2 verb flagged, flagging

1 (T) make a mark against something to show that it is important: I've flagged the parts I want to comment on.

2 (I) to become tired or weak: By ten o'clock I was beginning to flag and went up to bed.

flag sb/sth down phrasal verb (T) to make the driver of a vehicle stop by waving at them: I flagged down a taxi.