from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One who talks a lot, chats or prattles
from the GNU version of the Collaborative International Dictionary of English
- n. One who uses his tongue; a talker; a story-teller; a gossip.
from The Century Dictionary and Cyclopedia
- n. A talkative, loquacious person; a chatterer; a babbler.
Derived from tongue + -ster. Rather from the verb than the noun. (Wiktionary)