\Tit"ter\, v. t. [imp. & p. p. {Tittered}; p. pr. & vb.
n. {Tittering}.] [Probably of imitative origin.]
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.

\Tit"ter\, n.
A restrained laugh. ``There was a titter of . . . delight on
his countenance.'' --Coleridge.

\Tit"ter\, v. i.
To seesaw. See {Teeter}.