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The Collaborative International Dictionary of English v.0.48 (gcide)

Seesaw \See"saw`\, n. [Probably a reduplication of saw, to
express the alternate motion to and fro, as in the act of
sawing.]
1. A play among children in which they are seated upon the
opposite ends of a plank which is balanced in the middle,
and move alternately up and down.
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2. A plank or board adjusted for this play.
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3. A vibratory or reciprocating motion.
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He has been arguing in a circle; there is thus a
seesaw between the hypothesis and fact. --Sir W.
Hamilton.
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4. (Whist.) Same as {Crossruff}.
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Seesaw \See"saw`\, v. i. [imp. & p. p. {Seesawad}; p. pr. & vb.
n. {Seesawing}.]
To move with a reciprocating motion; to move backward and
forward, or upward and downward.
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Seesaw \See"saw`\, v. t.
To cause to move backward and forward in seesaw fashion.
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He seesaws himself to and fro. --Ld. Lytton.
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Seesaw \See"saw`\, a.
Moving up and down, or to and fro; having a reciprocating
motion.
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Crossruff \Cross"ruff`\ (-r?f`), n. (Whist)
The play in bridge or whist where partners trump each a
different suit, and lead to each other for that purpose; --
called also {seesaw}.
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