"seesaw" in the noun sense
1. seesaw, teeter, 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
"seesaw" in the verb sense
1. teeter-totter, teetertotter, seesaw
ride on a plank
move up and down as if on a seesaw
3. teeter, seesaw, totter
move unsteadily, with a rocking motion
Source: WordNet® (An amazing lexical database of English)
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