The act of twittering; a small, tremulous, intermitted noise, as that made by a swallow
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
A half-suppressed laugh; a fit of laughter partially restrained; a titter; a giggle