definition of
teeter

[1] #1 teeter v. [seesaw, totter] move unsteadily, with a rocking motion. wn

[2] #2 teeter n. [seesaw, teeter-totter, teetertotter, teeterboard, tilting board, dandle board] a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end. wn