/ Dictionary / Index C cornstarch: Meaning and Definition of Find definitions for: corn•starch Pronunciation: (kôrn'stärch"), [key] — n. a starch or a starchy flour made from corn and used for thickening gravies and sauces, making puddings, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cornstarch (Thesaurus) cornstalk cornstick Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language