flag
A1Pronunciation
UK
- /flˈæɡ/
US
- /ˈflæɡ/
Meanings
Noun
a piece of cloth with colors or symbols representing a country, group, or signal
a warning sign or indicator that draws attention to a possible problem
a software marker, option, or status value used to control or record behavior
Verb
to mark something for attention, review, or special handling
to signal someone, especially a vehicle, to stop or pay attention
to become weak, tired, or less energetic
Beyond the definition
A flag is more than just a piece of cloth; it is a symbol, often representing a nation, organization, or belief. Think of the American Stars and Stripes waving proudly, or a pirate flag with a skull and crossbones warning of danger. But flags are not always about countries. A referee uses one to signal penalties in football, and gardeners use small ones to mark where they planted seeds. To "flag" something can also mean to draw attention to it, like flagging an inappropriate comment online.
Flags have a long history of being used for communication, identification, and as powerful signs of identity. From ancient battle standards to modern national symbols, this is a surprisingly versatile word with many meanings.
A flag is typically a rectangular piece of cloth, often brightly colored and bearing a distinctive design or emblem. While most commonly associated with nations—representing their history, values, and identity—flags serve a multitude of purposes beyond simple national representation.
Think about the Olympic rings on a white background; that is a flag signifying international athletic competition. Or consider the checkered black-and-white one used in racing to signal the end of a race. These are all examples of symbolic flags, communicating meaning through visual cues.
The word "flag" also has a verb form. To "flag" something means to mark it for attention—like flagging an email as important or flagging a post on social media for review. It can also mean to droop or become weak, as in, "His energy began to flag after hours of hiking."
Historically, flags were crucial for military communication and identification on the battlefield. Today, they remain powerful symbols of national pride, often displayed during celebrations, ceremonies, and times of remembrance. They are a visual shorthand for complex ideas about belonging, history, and shared identity.
So whether it's waving from a flagpole, marking a garden row, or signaling an issue online, the flag is a versatile symbol with a rich history and diverse range of applications.
Examples
- 1
Civic display
The flag was flying above the town hall.
- 2
Parade
One runner carried a flag at the front of the parade.
- 3
Surrender signal
We waved a white flag and asked to talk.
- Phrasea white flag
a sign that you want to stop fighting
- 4
Review
Please flag any mistakes before you send the report.
- Patternflag + thing
mark it so someone notices or checks it
More examplesFewer examples
- 5
Spam detection
The website automatically flagged the comment as spam.
- Patternflag + thing + as + category
mark it as belonging to that group
- 6
Taxi signal
She stepped into the road and flagged down a taxi.
- Phraseflag down
signal to a driver to stop
- 7
Losing interest
His interest in the project began to flag after a few months.
- 8
Warning sign
The sudden drop in sales was a red flag for the team.
- Phrasea red flag
a warning sign
See also
Forms and spellings
4 forms open this card.
Main spelling
- flagnounverb
Forms
- flagspluralnounverb
- flaggedpast tenseverbnoun
- flagging-ing formverbnoun