What does "titter" mean?

Titter: To laugh with the tongue striking against the root of the upper teeth; to laugh with restraint, or without much noise; to giggle. A group of tittering pages ran before. Longfellow.

Additional senses

  1. 2.A restrained laugh. "There was a titter of . . . delight on his countenance." Coleridge.
  2. 3.To seesaw. See Teeter.

Sources