Here are the original definitions for 'twitter':
1. to utter a succession of small, tremulous sounds, as a bird.
2. to talk lightly and rapidly, especially of trivial matters; chatter.
3. to titter; giggle.
4. to tremble with excitement or the like; be in a flutter.
And in other social media news, 250 emojis will be released later this year: http://huff.to/1nki0Po