What is the meaning of Twitter?

The sound of a succession of chirps as uttered by birds.

Unwanted flicker that occurs in interlaced displays when the image contains vertical detail that approaches the horizontal resolution of the video format.

A tremulous broken sound.

A slight trembling of the nerves.

Chiefly in the form in a twitter: a state of excitement or nervousness; a twit.

To utter a succession of chirps.

(of a person) To talk in an excited or nervous manner.

To make the sound of a half-suppressed laugh; to titter; to giggle.

To have a slight trembling of the nerves; to be excited or agitated.

To twit; to reproach or upbraid.

Alternative form of Twitter

A knot or other defect in a thread or yarn which hinders spinning or weaving; a twit.

to tweet (to post to Twitter)

Source: wiktionary.org