Seesaw

1.

A vibratory or reciprocating motion.

2.

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.

3.

A plank or board adjusted for this play.

1.

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

1.

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

2.

(TRANSITIVE) To cause to move backward and forward in seesaw fashion.