/ Dictionary / Index C cyl.: Meaning and Definition of Find definitions for: cyl. Pronunciation: [key] cylinder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyke cylinder Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language