flag somebody/something ↔ down phrasal verb ( see also ↑ flag )
to make the driver of a vehicle stop by waving at them:
I flagged down a taxi.
flag somebody/something ↔ down phrasal verb ( see also ↑ flag )
to make the driver of a vehicle stop by waving at them:
I flagged down a taxi.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012