/ Dictionary / Index Y yatter: Meaning and Definition of Find definitions for: yat•ter Pronunciation: (yat'ur), [key] — Informal. Informal. —v.i. to chatter or jabber. —n. chatter; idle talk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ya-ta-ta Yauco Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language