Wave

1. A ridge or swell moving through or along the surface of a large body of water. As kids we love playing in the waves at the beach.
2. To move or swing as in giving a signal. He waved his hand to acknowledge he had seen her.
3. To move freely back and forth or up and down in the air, as branches in the wind. The corn stalks waved in the wind.
4. T signal (a person) to move in a specified direction. The police officer waved the motorist into the right lane.