/ Dictionary / Index R rehash: Meaning and Definition of Find definitions for: re•hash Pronunciation: (v.rē-hash'n.rē'hash&sec), [key] — v.t. to work up (old material) in a new form. —n. the act of rehashing. something rehashed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rehash (Thesaurus) rehabilitate rehearing Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language