wave off
动词- To give a wave of one's hand, or of a flag or wand, so as to signal (someone) to desist or leave. · Near-synonym: wave away· He waved off the approaching truck driver and restarted the apparatus.
- Of an aircraft carrier landing signal officer, to signal a pilot to go around.
- To say goodbye to someone with a wave (hand gesture).
- Of a referee, to disallow a field goal with the aforementioned hand gesture.
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