Swing. Uterus.
The swing swings in the wind, symbolizing the baby swinging in the womb. Swing means womb, and by extension abundance of life.
A man dreams that there is no one on the swing, which means that his wife will not be pregnant.
A woman dreams of no one on the swing, which means that the child may die.
An unmarried woman dreams of someone playing a swing, which means that she will be a mistress for a man.
The old man dreamed that he was playing a swing, which meant that he would die soon.