from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To utter a succession of light chirping or tremulous sounds; chirrup.
- intransitive v. To speak rapidly and in a tremulous manner: twittering over office gossip.
- intransitive v. To giggle nervously; titter.
- intransitive v. To tremble with nervous agitation or excitement.
- transitive v. To utter or say with a twitter: twittered a greeting.
- n. The light chirping sound made by certain birds.
- n. A similar sound, especially light, tremulous speech or laughter.
- n. Agitation or excitement; flutter.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The sound of a succession of chirps as uttered by birds.
- v. To utter a succession of bird's chirps.
- v. (of a person) To talk in an excited or nervous manner.
- v. To use the microblogging service Twitter.
from the GNU version of the Collaborative International Dictionary of English
- n. One who twits, or reproaches; an upbraider.
- intransitive v. To make a succession of small, tremulous, intermitted noises.
- intransitive v. To make the sound of a half-suppressed laugh; to titter; to giggle.
- intransitive v. To have a slight trembling of the nerves; to be excited or agitated.
- transitive v. To utter with a twitter.
- n. The act of twittering; a small, tremulous, intermitted noise, as that made by a swallow.
- n. A half-suppressed laugh; a fit of laughter partially restrained; a titter; a giggle.
- n. A slight trembling or agitation of the nerves.
from The Century Dictionary and Cyclopedia
- n. A gardeners' name for certain plant-deformations caused by insects, notably a curious bunching and twisting of the carnation-plant caused by the work of anthomyiid larvæ. Some forms of twitter are caused by thrips and others by plantlice.
- To utter a succession of small, tremulous sounds, as a bird; sing in bird-notes; chirp.
- To titter; giggle.
- To quiver; tremble; palpitate; hence, to be in a flutter or fright.
- To sing or utter in bird-notes; chirp out.
- To spin unevenly.
- n. A chirp or series of chirps, as of a bird, especially the swallow.
- n. A fit of laughter; a titter.
- n. A tremble; a flutter; a general excitement; a pother: as, to be in (or of) a twitter, or to be in or on the twitters.
- n. One who twits or reproaches.
- n. A shred; a fragment: used in the plural.
- n. The refuse or residuum of the case of the spermwhale, a gummy and thready substance left when the case is squeezed.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a series of chirps
- v. make high-pitched sounds, as of birds
Middle English twiteren, ultimately of imitative origin.(American Heritage® Dictionary of the English Language, Fourth Edition)
Imitating the sound. (Wiktionary)