/ Dictionary / Index W whole sister: Meaning and Definition of Find definitions for: whole' sis"ter Pronunciation: [key] a sister whose parents are the same as one's own. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wholesaling whole snipe Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language