The Collaborative International Dictionary
Twitter \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.]
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To make a succession of small, tremulous, intermitted noises.
The swallow twittering from the straw-built shed.
--Gray. To make the sound of a half-suppressed laugh; to titter; to giggle.
--J. Fletcher.[Perhaps influenced by twitch.] To have a slight trembling of the nerves; to be excited or agitated.
Twittering \Twit"ter*ing\, n.
The act of one who, or that which, twitters.
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A slight nervous excitement or agitation, such as is caused by desire, expectation, or suspense.
A widow, who had a twittering towards a second husband, took a gossiping companion to manage the job.
--L'Estrange.
Wiktionary
n. The act of producing chirping sounds, or twitters. vb. (present participle of twitter English)
Usage examples of "twittering".
All about him the twitterings of birds could be heard, behind which he could just perceive, now and again as he jarred around this hairpin bend or that, the musical tinkling of a waterfall.
The flickers and twitterings were users -- or mostly, their agents -- logging on, depositing or retrieving information, logging off.
The sweet fragrance of wet leaves rose from below, and the twitterings of a multitude of roosting birds.
Whereas the falcon had communicated by its own twitterings, which only the man could understand, this one, arisen out of the other's death, uttered what they could all distinguish.
Birds filled the early morning air with twitterings, chirpings, and raucous caws.