yakker

Noun

 * 1)  One who yaks; a chatterbox or motormouth.
 * 2) * 1999,, "" (song):
 * Wanna be hackers? Code crackers?  Slackers? Wastin' time with all the chat room yakkers?

Etymology 2
Said to be from the flight path of the yawker bird.

Noun

 * 1)  A curveball or slider.