DICT.TW Dictionary Taiwan

 Twit·ter, v. i. [imp. & p. p. Twittered p. pr. & vb. n. Twittering.]
 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.
 3.  To have a slight trembling of the nerves; to be excited or agitated.