GNU Collaborative International Dictionary of English
Found one definition
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Teeter (?), v. i. & t. [imp. & p. p. Teetered (?); p. pr. & vb. n. Teetering.] [Prov. E. titter to tremble, to seesaw; cf. Icel. titra to tremble, OHG. zittarōn, G. zittern.] 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.]
[1913 Webster]
[The bobolink] alit upon the flower, and teetered up and down. H. W. Beecher.
[1913 Webster]