A long plank balanced on a central fulcrum so that with a person riding on each end, one end goes up as the other goes down. Also called regionally dandle, dandle board, teedle board, teeter, teeterboard, teeter-totter, tilt1, tilting board. See Regional Note at teeter-totter.
The act or game of riding a seesaw.
A back-and-forth or up-and-down movement, as of the lead between two contesting parties.
intr.v.
see·sawed, see·saw·ing, see·saws
To play on a seesaw.
To move back and forth or up and down.
[Reduplication of saw1.]
tee·ter·board (tē'tər-bôrd', -bōrd') n.
Northeastern U.S.
[tee-ter-bawrd, -bohrd] 
tərˌbɔrd