"Swing" is the Engpsh word for "荡秋千" (dàng qiūqiān).
The word "swing" comes from the Old Engpsh word "swong," which means "a movement to and fro, a swaying."
Examples:
"The children were playing on the swings at the park." (孩子们在公园的荡秋千上玩。)
"He pushed her gently on the swing." (他轻轻地推她荡秋千。)
"She felt a sense of freedom as she swung back and forth." (她荡秋千时感到了自由。)