\Twit"ter\, n. [From {Twit}.]
One who twits, or reproaches; an upbraider.

\Twit"ter\, v. i. [imp. & p. p. {Twittered}; p. pr. &
vb. n. {Twittering}.] [OE. twiteren; of imitative origin; cf.
G. zwitschern, OHG. zwizzir?n, D. kwetteren, Sw. qwitra, Dan.
quiddre. Cf. {Titter}.]
1. To make a succession of small, tremulous, intermitted
   noises.
         The swallow twittering from the straw-built shed.
                                               --Gray.
2. To make the sound of a half-suppressed laugh; to titter;
   to giggle. --J. Fletcher.
3. [Perhaps influenced by twitch.] To have a slight trembling
   of the nerves; to be excited or agitated.

\Twit"ter\, v. t.
To utter with a twitter. --Cowper.

\Twit"ter\, n.
1. The act of twittering; a small, tremulous, intermitted
   noise, as that made by a swallow.
2. A half-suppressed laugh; a fit of laughter partially
   restrained; a titter; a giggle. --Hudibras.
3. A slight trembling or agitation of the nerves.