A fluttering sign or signal made with the hand, a flag, etc.: a farewell wave.To be moved, especially alternately in opposite directions: The woman's handkerchief waved in encouragement.Watch Queue, queue _count total loading.

(at sports events, especially baseball games) a momentary standing and sitting back down by spectators in a sequential, lateral way to create, en masse, a wavelike effect visually.Online Etymology Dictionary, 2010 Douglas Harper Medicine definitions for waves wave.

"move back and forth Old English wafian "to wave with the hands" (related to wæfre "wavering, restless from Proto-Germanic *wab- (cf.See Note at refraction.