flag

1 of 6

noun (1)

ˈflag 

also ˈflāg

: any of various monocotyledonous plants with long ensiform leaves: such as

a

: iris

especially : a wild iris

b

: sweet flag

flag

2 of 6

noun (2)

often attributive

1

: a usually rectangular piece of fabric of distinctive design that is used as a symbol (as of a nation), as a signaling device, or as a decoration

2

a

: the tail of some dogs (such as a setter or hound)

also : the long hair fringing a dog's tail

b

: the tail of a deer

3

a

: something used like a flag to signal or attract attention

threw a penalty flag

see alsored flag, white flag

b

: one of the cross strokes of a musical note less than a quarter note in value

4

: something represented by a flag: such as

a

: flagship

b

: an admiral functioning in the office of command

c

: nationality

especially : the nationality of registration of a ship or aircraft

flag

3 of 6

verb (1)

flagged; flagging

transitive verb

1

: to signal with or as if with a flag

especially : to signal to stop

flagged the train

—often used with down

2

: to mark or identify with or as if with a flag

flagged potential problems in the proposal

3

: to call a penalty on : penalize

a lineman flagged for being offside

flag

4 of 6

verb (2)

flagged; flagging

intransitive verb

1

: to hang loose without stiffness

2

a

: to become unsteady, feeble, or spiritless

b

: to decline in interest, attraction, or value

flagging stock prices

flag

5 of 6

noun (3)

: a hard evenly stratified stone that splits into flat pieces suitable for paving

also : a piece of such stone

flag

6 of 6

verb (3)

flagged; flagging

transitive verb

: to lay (something, such as a pavement) with flags (see flag entry 5)

Synonyms of flag

Noun (2)

• banner
• ensign
• colors
• pennant

Verb (1)

• motion
• wave
• gesture
• signal

Verb (2)

• droop
• hang
• sag

Examples of flag in a Sentence

Noun (2)

the flags of both countries were prominently displayed at the treaty signing

road crews using handheld stop signs as flags at both ends of the highway construction zone

Verb (1)

flagged the cars into the other parking lot

Verb (2)

flowers flagging in the summer heat

we flagged as we neared the end of the long mountain trail

Recent Examples on the Web

Noun

Flower wreaths lined the wall outside the Hong Kong Funeral Home, and Tung’s casket was draped in a Chinese flag when it was brought out after the service. — Los Angeles Times, 21 Sep. 2026

Every single pizza here is its own feast of bold flavor combinations, and there's no surprise that the first place that Martucci planted his flag outside of Italy was Miami's artsy Wynwood District. — Kat Chen, Condé Nast Traveler, 21 Sep. 2026

Verb

How the Blue Cross fraud claims unfolded In January 2023, Blue Cross NC’s special investigations unit flagged C&FD and requested medical, operational and credentialing records for a random sample of 419 member claims, according to the lawsuit. — Charlotte Observer, 22 Sep. 2026

ChatGPT had been linked to the FSU shooting, as well as to a Cybertruck bombing in Las Vegas, and British Columbia alleged that the Tumbler Ridge shooter should’ve been flagged as threatening as the users in those cases. — Ashley Belanger, ArsTechnica, 22 Sep. 2026

Word History

Etymology

Noun (1)

Middle English flagge reed, rush

Noun (2)

probably akin to fag end of cloth — more at fag end

Verb (2)

probably from flag entry 2

Noun (3)

Middle English flagge turf, perhaps from Old Norse flaga slab; akin to Old English flōh chip

First Known Use

Noun (1)

14th century, in the meaning defined above

Noun (2)

1530, in the meaning defined at sense 1

Verb (1)

1856, in the meaning defined at sense 1

Verb (2)

1540, in the meaning defined at sense 1

Noun (3)

1604, in the meaning defined above

Verb (3)

1615, in the meaning defined above

Phrases Containing flag

• battle flag
• black-flag
• blue flag
• blue flag iris
• capture the flag
• checkered flag
• Confederate flag
• false flag
• flag day
• flag football
• flag of convenience
• flag officer
• flag of truce
• flag rank
• flag stop
• flag-waver
• flag-waving
• Pride flag
• Progress Pride flag
• rainbow flag
• raise the white flag
• red-flag
• red-flag law
• sweet-flag
• took the checkered flag
• white flag

Rhymes for flag

• ag
• bag
• brag
• dag
• drag
• gag
• hag
• hagg
• lag
• mag
• nag
• rag

Kids Definition

flag

1 of 6 noun

ˈflag 

: any of various irises

especially : a wild iris

flag

2 of 6 noun

1

: a piece of cloth with a special design that is used as a symbol (as of a nation) or for signaling

2

: something used like a flag to signal or attract attention

flag

3 of 6 verb

flagged; flagging

: to signal with or as if with a flag

especially : to signal to stop

flag a taxi

flag

4 of 6 verb

flagged; flagging

1

: to be limp : droop

2

: to become weak

his hope flagged

flag

5 of 6 noun

1

: a hard stone that easily splits into flat pieces

2

: a piece of flag used for paving

flag

6 of 6 verb

flagged; flagging

: to pave (as a walk) with flags

Etymology

Noun

Middle English flagge "reed"

Noun

probably akin to fag "end of cloth"

Verb

probably from ²flag

Noun

Middle English flagge "a piece of turf, a flat paving stone"