1. a playground equipment consisting of a long board balanced on a central support, allowing children to sit on opposite ends and move up and down alternately

1. to move up and down or back and forth alternately

1. moving back and forth or up and down; alternating

Examples

• The children played on the seesaw at the playground.
• Stock prices continued to seesaw throughout the trading day.
• The political debate featured a seesaw battle between the candidates.
• Her emotions seemed to seesaw between excitement and anxiety.
• The seesaw motion of the boat made some passengers feel seasick.
• The old wooden seesaw creaked as the kids played on it.
• The team’s performance showed a seesaw pattern of wins and losses.