Definitions
There is 1 meaning of the phrase
Flag Down.
Flag Down - as a verb
Signal to stop
Example: "Let's flag down a cab--it's starting to rain"
Example Sentences
"We tried to flag down a taxi, but none were available."
"The stranded hiker used a mirror to flag down a passing helicopter."
"I need to flag down a waiter to order another drink."
"She waved her arms to flag down the bus."
"We decided to flag down a passing boat for help."