D defs.my
Entry 1 sense Webster, 1913

Teeter

/tēt'-ẽr/ · Tee·ter · IPA /ˈtitəɹ/
01 v. i. & t. To move up and down on the ends of a balanced plank, or the like, as children do for sport; to seesaw; to titter; to titter-totter.
imp. & p. p. Teetered; p. pr. & vb. n. Teetering
  1. 1.
    To move up and down on the ends of a balanced plank, or the like, as children do for sport; to seesaw; to titter; to titter-totter.[U. S.]
    “[The bobolink] alit upon the flower, and teetered up and down.” — H. W. Beecher.