/ Dictionary / Index C cogon: Meaning and Definition of Find definitions for: co•gon Pronunciation: (kō-gōn'), [key] — n. a tall, coarse grass, Imperata cylindrica, of the tropics and subtropics, used widely for thatching. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cognovit cog railway Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language