Waving

Waving is a nonverbal communication gesture that consists of the movement of the hand and/or entire arm that people commonly use to greet each other, but it can also be used to say goodbye, acknowledge another's presence, call for silence, or deny someone. The wave gesture is an essential element of human language.

This article is about the human hand gesture. For waves in the scientific sense, see Wave. For other uses, see Wave (disambiguation).
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