Pronunciation: (twit'ur),[key] —v.i. 1. to utter a succession of small, tremulous sounds, as a bird.
2. to talk lightly and rapidly, esp. of trivial matters; chatter.
3. to titter; giggle.
4. to tremble with excitement or the like; be in a flutter.
—v.t. to express or utter by twittering.
—n. 1. an act of twittering.
2. a twittering sound.
3. a state of tremulous excitement.