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.