flag down

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Related to flagging down: flagging off
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flag down

To wave one's arms to attract someone's attention, usually to get them to stop moving. A noun or pronoun can be used between "flag" and "down." I was finally able to flag down a passing motorist to help with our stalled car. It'll take awhile to flag a taxi down. Why don't we just walk to the museum?
See also: down, flag

flag someone or something down

to signal or wave, indicating that someone should stop. Please go out and flag a taxi down. I'll be right out. She went to flag down a taxi.
See also: down, flag

flag down

Signal to stop, as in The police were flagging down all cars. This expression uses the verb flag in the sense of "catch the attention of, as by waving a flag," a usage dating from the mid-1800s; down was added in the first half of the 1900s.
See also: down, flag

flag down

v.
To signal something or someone to stop: I flagged down a taxi when it started raining. When we ran out of gas, we flagged the police officer down to ask for help.
See also: down, flag
References in periodicals archive ?
At Edinburgh Sheriff Court Brian Walker, 17, of Restalrig in the city admitted flagging down the ambulance in Edinburgh last October and trying to get in.
A GIRL of 15 was raped at a railway station before flagging down a car for help - and being raped again by a different man.
He said a concerned citizen reported through a text message to the CITF hotline that PNP members were flagging down motorists, mostly taxi drivers, and extorting money between 11 p.m.
A MAN accused of flagging down a pensioner's car to scam money has failed to appear in court.
But Sarah Davies' young sons, Jason, 7, and Thomas, 4, came to her aid and dragged her to the roadside before flagging down drivers to help.
This can lead to people illegally flagging down private hire or unlicensed vehicles posing as taxis, and it's then that trouble can occur.