When birds twitter, they make a lot of short high-pitched sounds. There were birds twittering in the eucalyptus trees. a tree filled with twittering birds. Twitter is also a noun. Naomi would waken to the twitter of birds
If you say that someone is twittering about something, you mean that they are speaking about silly or unimportant things, usually rather fast or in a high-pitched voice. debutantes twittering excitedly about Christian Dior dresses She laughs, blushes and twitters: `Oh, doesn't Giles have just the most charming sense of humour?'