/ Dictionary / Index P pitch cylinder: Meaning and Definition of Find definitions for: pitch' cyl"inder Pronunciation: [key] — Mach. Mach. See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pitch cone pitch-dark Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language