/ Dictionary / Index R ratch: Meaning and Definition of Find definitions for: ratch Pronunciation: (rach), [key] — n. a ratchet. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ratch (Thesaurus) ratcatcher rat cheese Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language