Seesaw
Part of speech: verb
Definition: To use a seesaw. To fluctuate
Part of speech: noun
Definition: A structure composed of a plank, balanced in the middle, used as a game in which one person goes up as the other goes down; a teeter-totter a series of up-and-down movements.
Teeterboard
Part of speech: noun
Definition: A seesaw; teetertotter.A similar board used by acrobats that sends a human into the air when another human jumps onto the opposite end.