Pronunciation: (kib'it-sur), [key]
1. a spectator at a card game who looks at the players' cards over their shoulders, esp. one who gives unsolicited advice.
2. a giver of uninvited or unwanted advice.
3. a person who jokes, chitchats, or makes wisecracks, esp. while others are trying to work or to discuss something seriously.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.