| 1. | a rectangular board mounted on a fulcrum, for use by acrobats and gymnasts to gain momentum in feats of tumbling. |
| 2. | a similar board, used in exercising, on which the body rests on an inclined plane, with the legs on a higher level than the head and arms. |
| 3. | New England. tilting board. |
| a seesaw. |
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