To move back and forth suspended in the air; playground equipment that hangs and moves, or sudden changes in mood or opinion.
From Old English 'swingan,' meaning 'to swing or beat.' Related to German 'schwingen.' The playground equipment meaning emerged in the 19th century.
Swings are one of humanity's oldest inventions—people have been swinging suspended objects for thousands of years, but the word 'playground swing' only became common in the 1800s!
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