waving

n. moving your hand from side to side to say hello, goodbye, or to get attention.

n. the act of moving the hand or an object to and fro as a greeting, farewell, or signal.

“With a friendly waving of her hand, she said goodbye to her friends.”

“The frantic waving of the stranded hikers finally caught the attention of the rescue helicopter pilot.”

n. the way something like a flag or long grass moves back and forth in the air.

n. the undulating or fluttering motion of a flexible object, such as a flag or foliage, caused by air currents.

“The waving of the tall grass in the field looked like a green ocean.”

“The rhythmic waving of the banners atop the castle walls provided a colourful display for the arriving dignitaries.”