Definition of: teeter

(tē′tər) v.i.
1. To see-saw.
2. To walk or move with a swaying or tottering motion.
3. To vacillate; waver.
—v.t.
4. To cause to teeter.
—noun
1. An oscillating motion.
2. A see-saw.
3. The spotted sandpiper: so called from its jerky motions. [<dial. E titter, prob. <ON titra tremble, shiver]