/ Dictionary / Index F foster daughter: Meaning and Definition of Find definitions for: fos'ter daugh'ter Pronunciation: [key] a girl raised like one's own daughter, though not such by birth or adoption. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Foster City foster father Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language