/ Dictionary / Index R ratfish: Meaning and Definition of Find definitions for: rat•fish Pronunciation: (rat'fish"), [key] — pl. -fish, -fish•es. a chimaera, Hydrolagus colliei, of the Pacific Ocean from Alaska to Lower California, having a ratlike tail. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ratfink rat guard 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