| 1. | a recreation in which two children alternately ride up and down while seated at opposite ends of a plank balanced at the middle. |
| 2. | a plank or apparatus for this recreation. |
| 3. | an up-and-down or a back-and-forth movement or procedure. |
| 4. | Whist. a crossruff. |
| 5. | moving up and down, back and forth, or alternately ahead and behind: It was a seesaw game with the lead changing hands many times. |
| 6. | to move in a seesaw manner: The boat seesawed in the heavy sea. |
| 7. | to ride or play on a seesaw. |
| 8. | to keep changing one's decision, opinion, or attitude; vacillate. |
| 9. | to cause to move in a seesaw manner. |

see·saw (sē'sô') n.
[Reduplication of saw1.] |
SEESAW language
An early system on the IBM 701.
[Listed in CACM 2(5):16 (May 1959)].
(1994-12-15)