/ Dictionary / Index G grefa: Meaning and Definition of Find definitions for: gre•fa Pronunciation: (grē'fu, -fä), [key] — n. Slang. griefo. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. greeting card Greg Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language