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3. wave back

wave back

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wave back (at someone)

to return someone's hand signal of greeting. I waved back at her, but she didn't see me. She didn't wave back.

See also: back, wave

wave someone back (from something)

to motion someone to move back from something. The police officer waved the curious onlookers back from the scene of the crime. The students started to go onstage, but the teacher waved them back.

See also: back, wave