/ Dictionary / Index C cohosh: Meaning and Definition of Find definitions for: co•hosh Pronunciation: (kō'hosh, kō-hosh'), [key] — n. either of two unrelated plants of the eastern U.S., Cimicifuga racemosaof the buttercup family, or Caulophyllum thalictroidesof the barberry family, both used medicinally. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cohosh (Thesaurus) coho salmon co-host Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language