/ Dictionary / Index R register of wills: Meaning and Definition of Find definitions for: reg'ister of wills' Pronunciation: [key] (in some states of the U.S.) the official charged with the probate of wills or with the keeping of the records of the probate court. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. registered representative register ton Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language