definition of
wave

[1] #1 wave n. [moving ridge] one of a series of ridges that moves across the surface of a liquid (especially across a large body of water). wn

[2] #2 wave v. [beckon] signal with the hands or nod; "She waved to her friends"; "He waved his hand hospitably". wn

[3] #3 wave n. a movement like that of a sudden occurrence or increase in a specified phenomenon; "a wave of settlers"; "troops advancing in waves". wn

[4] #4 wave n. [undulation] (physics) a movement up and down or back and forth. wn

[5] #5 wave v. [brandish, flourish] move or swing back and forth; "She waved her gun". wn