Definition of "seesaw" [see•saw]

• 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. (noun)
• The act or game of riding a seesaw. (noun)
• A back-and-forth or up-and-down movement, as of the lead between two contesting parties. (noun)
• To play on a seesaw. (verb-intransitive)
• To move back and forth or up and down. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "It relies on what they term "seesaw" logic gates, which we've diagrammed below."
• "It's what I call the "seesaw of pain" - somebody's always getting hurt."
• "And the polls are about as steady as a seesaw, which is to say that if you pay too close attention, you could get motion sickness."