a series of waves in the hair made by applying heat and chemicals | a movement like that of a sudden occurrence or increase in a specified phenomenon |
| a hairdo that creates undulations in the hair |
| the act of signaling by a movement of the hand |
| (physics) a movement up and down or back and forth |
| one of a series of ridges that moves across the surface of a liquid (especially across a large body of water) |
| something that rises rapidly |
| a persistent and widespread unusual weather condition (especially of unusual temperatures) |
| an undulating curve |