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1. a plank balanced in the middle so that two people seated on the ends can ride up and down by pushing on the ground with their feet
2. the pastime of riding up and down on a seesaw
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


An early system on the IBM 701.

[Listed in CACM 2(5):16 (May 1959)].
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References in periodicals archive ?
The seesaw seat was not as stable as I'd have liked so I picked Thomas to stand next to, not because he's my favourite but because he is the one most likely to fall off.
American and Mexican families play with a toy called "up and down" (Seesaw swing) over the Mexican border with the US at the Anapra zone in Ciudad Juarez, Chihuahua State, Mexico on July 28, 2019.
Santos, who's won seven titles, compared the back-and-forth series to a literal seesaw saying the result of Game 6 gave put the pendulum in a perfect balance.
Lionel Messi and Luis Suarez came to Barcelona's rescue Tuesday, scoring late goals to salvage 4-4 draw at 10-man Villareal in a thrilling seesaw match that saw both teams give up a two-goal lead.
Subsequent albums, namely Seesaw and Live In Amsterdam by Beth Hart and Joe Bonamassa, achieved numberone status on the Billboard Blues Album Chart.
Debt is like a seesaw, a lot of people may have a few quid in savings, they might have [euro]40,000 tucked away and say a [euro]40,000 mortgage and think should I clear my mortgage?
The graphic organiser had been uploaded to Seesaw by the teacher and children were able to log on to Seesaw and save it to their camera roll.
The then 43-year-old Tune confessed his struggle to make a living as a performer after his claim-to-fame performance in Seesaw (1973), and how his shift to directing got him back on his feet.
For the teacher longing for simplicity, organisation and efficiency, Seesaw might just be the answer.
In hitherto unverified extensions of the SM in the scalar, fermion, or gauge sectors, however, there are different theories for neutrino masses [1-11], which mainly exploit various seesaw mechanisms [9,11-48].