an electromagnetic wave generated by oscillations in an electric circuit
one of a series of ridges that moves across the surface of a liquid (especially across a large body of water)
signal with the hands or nod
(physics) a movement up and down or back and forth
move or swing back and forth
move in a wavy pattern or with a rising and falling motion
the act of signaling by a movement of the hand
a hairdo that creates undulations in the hair
