Seesaw
WordNet
noun
(1) A plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end
verb
(2) Move unsteadily, with a rocking motion
(3) Move up and down as if on a seesaw
(4) Ride on a plank
WiktionaryText
Etymology
Probably a frequentative imitative of rhythmic back-and-forth, up-and-down or zigzaging motion, such as teeter-totter, zigzag, flip-flop, ping-pong, etc., under the umbrella term of reduplication; also likely influenced by the verbs see and saw of either present or past tense.
Noun
- 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.