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1. To wave one's hand as a signal for someone or something to move away (from someone or something else). A noun or pronoun can be used between "wave" and "away." He came up to talk to me while I was still studying the report, so I had to just wave him away. A police officer stood in the road waving cars away from the scene of the accident.
2. To wave one's hand around in the air in order to dispel something. A noun or pronoun can be used between "wave" and "away." We spent the entire afternoon trudging through the swamp, waving away the flies and mosquitos. I need both my hands to fix this motor, so would you mind waving that smoke away from my face for me?
3. To dismiss or disregard something with an indifferent, apathetic, or aloof attitude or demeanor. A noun or pronoun can be used between "wave" and "away." I tried to warn the boss about the financial implications of such a move, but he just waved away my concerns. You can't just keep waving these problems away, Sarah. You'll have to deal with them eventually.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
wave someone or something away (from someone or something)
to make a signal with the hand for someone or something to move away from someone or something. The officer waved us away from the intersection where we were about to turn left. The guard waved away the traffic from the intersection.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.