see·saw /ˈsiˌsɔ/
蹺蹺板,上下動(a.)前後動的,交互的(vi.)玩蹺蹺板,上下搖動
see-saw
蹺板
See·saw n.
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. --Sir W. Hamilton.
4. Whist. Same as Crossruff.
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.
See·saw, v. t. To cause to move backward and forward in seesaw fashion.
He seesaws himself to and fro. --Ld. Lytton.
See·saw, a. Moving up and down, or to and fro; having a reciprocating motion.
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seesaw
n : a plaything consisting of a board balanced on a fulcrum; the
board is ridden up and down by children at either end
[syn: teeter-totter, teeterboard, tilting board, dandle
board]
v 1: ride on a plank
2: move up and down as if on a seesaw
3: move unsteadily, with a rocking motion [syn: teeter, totter]