wave somebody down

Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

wave sb/sth down phrasal verb before or after object [ waves sb/sth down waving sb/sth down waved sb/sth down waved sb/sth down waved sb/sth down ]
to make a driver stop their vehicle by waving your arms up and down
• If a car comes along, wave it down.
Thesaurus⁺: ↑Gestures with the hands or arms
Main entry: wave_{phrasal verb}