1. seesaws or similar playground equipment that tilts up and down when people sit on opposite ends
Usage: plural form
2. acrobatic equipment used in circus acts where one performer jumps on one end to propel another performer into the air
Usage: circus terminology; plural form

Examples

• The children played on the teeterboards at the playground.
• Two teeterboards were installed in the new park.
• The circus performers practiced their routine on the teeterboards.
• Safety inspectors checked all the teeterboards before opening day.
• The acrobats used teeterboards to launch each other high into the air.
• Old wooden teeterboards were replaced with modern equipment.