Seesaw /(?)/

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.
2. A plank or board adjusted for this play.
3. A vibratory or reciprocating motion.

   He has been arguing in a circle; there is thus a seesaw between the hypothesis and fact.

4. Same as Crossruff. (Whist.)

imp. & p. p. Seesawad; p. pr. & vb. n. Seesawing

1. To move with a reciprocating motion; to move backward and forward, or upward and downward.

1. To cause to move backward and forward in seesaw fashion.

   He seesaws himself to and fro.

1. Moving up and down, or to and fro; having a reciprocating motion.