(1):
(v. t.) To cause to move backward and forward in seesaw fashion.
(2):
(n.) Same as Crossruff.
(3):
(n.) A vibratory or reciprocating motion.
(4):
(n.) A plank or board adjusted for this play.
(5):
(n.) 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.
(6):
(a.) Moving up and down, or to and fro; having a reciprocating motion.
(7):
(v. i.) To move with a reciprocating motion; to move backward and forward, or upward and downward.